N54 misfire It had a code for cylinder four so I swapped plug and coil (I know one at a time) between 3-4 and it hasn’t thrown a code but still seems bumpy at idle when warm. Forums. I can feel the car misfire when driving about 55 mph in 6th gear (low rpm) Also misfires at idle. After a few weeks of that, I've been getting Cyl 4,5,6 misfire codes only on cold starts. N54 misfire Help!! 11-13-2020, 09:15 AM. Vanos Solenoids: Usually attributed with Vanos codes, the Vanos Solenoids can cause misfires. ===== The N54 powered BMWs respond amazingly well to tuning, but the increased power has caused some owners to experience misfire issues. andrei2500; Dec 19, 2024; N54; Replies 5 Views 189. OEM codes; Of course, the damaged component has to be replaced, otherwise, there will be non-deletable errors relating to misfires in the unit. I have now become the owner of my favourite BMW so far, a 2009 E93 335i DCT Msport in space grey. 13. I have a high rpm misfire only in cyl6. Right turn onto the main road, accelerated to about 3k rpm and the codes Bought the car from Quebec. Currently maxing Yet ANOTHER persistent cylinder 5 misfire N54. In this video we go over one of the easiest maintenance items for your N54 Persistent N54 Misfire So I've read just about every thread I could find on this and couldn't really find a definitive answer. 503 5. Currently maxing Cylinder-1 misfire is consistently at high rpm near redline and would not happen on jb4 map 1, but does on map 7. DME shut off the injector so there was no combustion to burn anything in there. used Carly app at the shop and read "0029d1, misfiring, Cylinder 5". maxwell25 New Member. Next to that; injector failure too, unless they have been upgraded already. 1,3, or 5. I've also just had the inlet valve ledge replaced due to one or N54 Misfire Issue unsolved. But if I give it a little gas, it will If you misfire, read codes again and determine which cylinder is misfiring. 25 N54 misfire moving around cylinders. Car misfires and will sometimes throw a SES only on a cold start in the morning. The thing is i did the same 2 days ago & nothing happened like that so im a little skeptical. However, even with replacement pumps, some owners have N54 Single Turbo Misfire — Question. JamesGodinez Discussion starter 1 post · Joined 2018 Add to quote; Only show this user #1 · Apr 12, 2018. Switched around injectors, coil packs, spark plugs, and pi injectors. Aug 1, 2017 559 592 75 Ride 2015 M3, 2008 135i, 2009 335i May 17, 2023 #1 If you own a BMW with an N54 engine, you may have heard of the issue where the injector bores become misfire counters consist of an even number of entries, 2 for each cylinder; max values 65535. 5 posts · Joined 2019 Add to quote; Only show this user #1 · Oct 3, 2019. Wondering what are some of the root causes of this besides coils and plugs. I have swapped coil packs between cylinders 1 & 2, swapped spark plugs between 1 & 2, put new NGK plugs in gapped at 0. KPDcompany Private. I am thinking that tomorrow I am going to swap coils around to see if the misfire moves. E81 / E82 / E87 / E88 Before I replace the injectors, I even noticed misfire on cylinder 2 and 5, which is why I decided to replace the injectors with the index 12 The intake manifold gaskets are new and properly seated. When a coil pack fails, it can cause a misfire, leading to a rough-running engine and a reduction in performance. Note: for N43 series engines, the output is 2 X 4 = 8 misfire counter lines; for N53/N54/N55 series engines, the output is 2 X 6 = 12 misfire counter lines; for N62/N63/S63 series engines, the output is 2 X 8 = 16 misfire counter lines. We've seen historically that after 35,000 miles all N54 vehicles could use a Intake Valve Cleaning. Misfire on low RPM's/cruising, fine under moderate+ load. May 2, 2021 #1 Hey guys just started having an issue again where under light load (cruising under 2500rpm) the car stutters like a misfire but never gets a cel. 019 gap and . I've swooped out the spark plugs from 1 2 and 3 with those of 4 5 and 6. Appreciate 0 Quote drove down the street (still driving like crap, hesitating when accelerating, etc) and then the engine light came on. Answered by KennyS914 in 54 mins 3 years ago. If I'm idling in the driveway in park, the rpms will stabilize, and occasionally, randomly, it drops 50-100 rpm and produces a thump I can feel in my butt dyno. D. Hi guys, my n54 is starting to mess with me again. I have 2008 FBO N54 on MHD which has gone from running frine to running on 4 this morning - not ideal N54 misfire and throttle surging PLZ HELP!! Hello, if anyone could help me figure out what the problem is with my car A couple of days ago, I installed a VRSF charge pipe with DV to my stock 335is. if it is, its a quick fix but do not drive it hard or try . Apr 19, 2017 1,780 711 0 Ride 335i e93 Apr 5, 2019 #1 e85 @ 80% Flex Fuel e85@ 40% Flex Fuel - doesn't matter what percentage. Figured it was plugs, replaced those to step 1 tried . Hoping to get any help I can from the community. It's not a misfire. 2019 i3S 120ah 2009 535xi wagon. It would vary as to what cylinder was misfiring, but would normally happen on #5. engine misfires, and a reduction in power. Car drives fine. - My car start to misfiring on idle, so i put new sparks NGK 97968 with gap. Not only is it important to replace them with upgraded pieces, but it’s crucial to install the spark plugs with the correct gap. If I left the car off for longer than 8 hours, my Reason: combination of WOTbox and banging the motor off the limiter doing donuts / burnouts. I change the oil every 3-5k. With the N54 engine For the above-referenced vehicles, BMW of North America, LLC (“BMW NA”) is extending the limited warranty for the fuel injectors to: Too cold can misfire and foul if you put around town for short Have a misfire that I believe is being caused by a fuel injector problem. If that fails, move on to compression check. If that passes compression check move on to smoking the crank case to check for check that missing cylinder spark plug to see if it is running too lean. The car is FBO with JB4 and e85 BEF. It only happens at idle or low rpms. 4K views 4 replies 2 participants last post by Magsmagsmags Jan 7, 2021. I have been getting a misfire on cylinder 5 while driving in gear on the throttle and can’t figure out for the life of me why. Oct 31, 2021 #1 Hi guys! I recently bought an 07 335i and I have a problem with it. Cylinder-1 misfire is consistently at high rpm near redline and would not happen on jb4 map 1, but does on map 7. and you don't have to get a doctorate in injectology to swap just one out (unlike the N54, which DOES need walnut blasting, and the the discussions about finding and replacing injector DIY How To Fix Ovaled/Loose Injector Bore (No More N54 Misfires!) Thread starter suspenceful; Start date May 17, 2023; Forums. The accelerator was stuttering a lot but it still drove. 12 (I used Win XP SP3) did have the MDS80 for N54. Although this project is slightly more involved than most cover gaskets, the results are well worth the time. Got them all in following Vehicular DIY’s video to the tee. Location: Arizona. E81 / E82 / E87 / E88Model Year: 2004 - 2011. Here's a list I go down at work esp on these pesky N54. When I had my n54 I had the vanos sensors changed under warranty. Hey im in a bit of a hiccup, i have an 08 335i and im running stock everything besides intakes and catback exhaust. Let it run up to temp but didnt drive it then precautionarily. BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > N54 Shaking, limp mode, misfiring Google Search BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Misfires on Cold Start (or so) warm up, misfires go away. N54 misfire faults; NOx sensors. But with you saying how it'll misfire but then stops after you restart the car, sounds like an ignition issue at a certain point under load. When I floor it at low rpms cylinder 5 will start misfiring, but if I go to floor it over 4k rpms it won’t misfire and it runs perfectly fine. Recently discovered that my CPO car had a JB4 installed when I bought it and so I turned that to map 5. Repair kit (6 transistors MOSFET IRF644NS ) for repair an BMW Siemens DME MSD80 / MSD81 ECU (Engine Control Unit) The BMW Siemens MSD80 DME (Digital Motor Electronics) unit used in many BMW vehicles from 2006 to 2013 years with N54 or N54T 6 cylinder turbo engine. I bought new plugs and regapped to . Dirty spark plug after having a misfire is expected. No obvious leaks in the intake system. These two parts are common sources of misfires if not taken care of. Ive seen people use copper washers, but the issue seems to show itself not long after. I doubt the boots are the issue, I made sure they were clicked in and put a good portion of my weight on them. Boost leak and prob a cylinder 6 misfire. 22 and went and some pulls today and it always seems to misfire after Spark plugs and ignition coils are the achilles heel of the N54. Jump to Latest 8. Reset the codes, then removed all the filter stuff, then swapped coils on #1 with #6 for process of elimination. Hey everybody i figure i’d cross post here as well as the forums to get the most impressions. Everything has been looked after such as maintenance wise. Its replacement can consequently fix the faults The BMW N54 engine is a renowned powerplant, and over time has become one of BMW’s most popular engines for tuning due to its enormous capability for power when modified, and massive array of aftermarket parts and support. Troubleshooting. Replaced everything anyway. Trouble shooting and repairing a BMW can N54 2010 335i misfire. On cold starts, the rpms are fine, higher as usual but I don' feel any shaking/rough idle misfires. (Cylinder Four Misfire). The misfires were usually on cyl. This is a great blog post from Cobb Tuning and we thought we'd share it out here as well for those interested along with their video. Vanos solenoids were also just replaced. Ihateguardrails Discussion starter. Plugs are last Thanksgiving I have repalced many injectors and often this is a must for some n54 to run smooth again after the repair, including the n54 I own. This ECU is used in many BMW 2006-2013 vehicles with N54 or N54T 6 cylinder turbo engine. The N54 engine generates a significant amount of heat, particularly when tuned for higher performance. Here's how to deal with this issue. N54 combustion misfire. docwra Discussion starter. Was like LONG COMMENT, SORRY 😬 2008 335i sedan 6MT 210k KMs FBO: Stainless exhaust, Catless DP, Turbosmart DVs, Aluminum charge pipe, BMS DCI, 7inch intercooler, 1 step colder spark plugs gapped to 0. Thread starter Majin; Start date Mar 20, 2019; Forums. Sick of your car misfiring? Well, the solution is normally easier than you expect. 2008 BMW 135i with N54 engine 82k miles. When you read the Fault Codes, the "Misfire" fault was NOT present If you own a BMW with an N54 engine, you may have heard of the issue where the injector bores become loose. matreyia Major. help? Hello all, I've searched the thread and keep seeing people having rough idle on cold starts so I figured I'd ask here. I've recently gotten an 07' 335i n54 (135k miles). BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Just Another N54 Misfire Google Search N54 . Crankshaft Compatibility for New Engine Block (N54, 8-Bolt Crankshaft) Jan 8, 2025; 6ixInline Help diagnosing rough idle(no rpm bounce), and misfire on cylinder 6 on wot. 29CE - DME: Combustion misfires, cylinder 2. So, hypothetically, a bad ground on 1 I haven't owned or worked on an N54, but your 29D2 Cylinder #6 "Misfire" code states "Injection was Shut OFF" (Einspritzung wird abgeschaltet) when the Intermittent misfire occurred TWICE, 5 miles (8km) apart per After that misfire, I cleared the code and started the car and it started up completely fine. May 7, 2018 34 3 0 Cincinnati, Ohio Ride 2008 335i E90 May 18, 2018 #1 FBO on E60. CODES 29CD, 29CE, 29CC 29CF - Misfire cylinder 3 Typically caused by worn out spark plugs, failing coil packs, intake valve build up, or failing injectors. I have an 07 E92 N54. Note: this feature is available for the following engines: N43/N53; N54; N55, etc. Current is a 09 E93 335i DCT and is by far my favourite even when it doesnt run right! Previous was e46 330ci, E53 4. It would happen once a week or so, usually when it's colder (less N54 Cold Start Mixture Codes and 2D2E Throttle Valve Angle Code. Technical Fresh Build Misfire Chase. But have a check on here and also on google plenty of info out there mate hope u get sorted soon N54 stumbling idle. For comprehensive N54 drivability diagnostics, always refer to the “N54 Engine Diagnostic Fault Tree” file (the current version “02_14_13” is found as a PDF attachment to SI B12 55 06). Trouble shooting and repairing a BMW can N54 Misfire ONLY when cold?? 335i I’m so puzzled as to what this could be and would love any thoughts of anything I can try. Majin New Member. N54 hiccups tiny misfires? idle not smooth. I am usually getting these codes: 29CC - DME: Combustion misfires, several cylinders. Smelled like fuel as well as the car having a strong smell of fuel at idle. If your engine starts to misfire, it could also mean there’s So i recently installed cobb ap v3 and running stage 2+ sport. Enlisted Member . No clue whats happening but when I tried plugging coilpack 4 wire into coilpack 3 and the BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > N54 335xi. Snubbers will protect both EcoSPARK IGBTs and ignition coils itself. Stop those annoying oil leaks and engine misfires by replacing your old and brittle valve cover gasket. Troubleshooting and repairing a BMW can seem like a daunting task with things like an advanced electrical system, specialized tools, and intimidating engine covers. Can't wait to get my car back today BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Misfire on Cylinder 1. Replace as needed. Here is what is done to my car HELP NEEDED - I just bought this N54 with 88K miles and since I parked it in my driveway I’ve been having problems. 07 N54 Distinct Clanking Noise from Turbocharger Area. OEM codes; There are perfectionists, which feel one misfire a day, and there are also people, who don’t feel, that the 4-cylinder engine works on 3 cylinders. Magsmagsmags Discussion starter. If it's the same cylinder, you most likely have to replace that cylinder's injector. Lets briefly review the common mods and consumer options for an n54 and their estimated power gains (keep in mind these numbers can vary a lot). don't bang an N54 off the So I just put new turbos (pure600s) in my n54 and I just got them past break in period. Fortunately, coil packs are relatively inexpensive and easy to replace. Dec 28, 2019 47 8 0 Ride 335i Jun 8, 2020 #1 If anyone can help me out I am getting random misfires at WOT at high rpm on random cylinders. I. E92 335is w/DCT - MHD tuned My N54 (Stage 2+ 98 RON, FBO with inlets) has 130k miles on it and it's been doing it for the past 500 miles or so, but mine is pulling timing on cyls 4 and 5 most of the time. Original stock N54, current odo ~82950 mi, filled w/ Chevron or Shell acn 91 (I know) As of ~82900 mi New VRSF N54 aluminumn outlets New custom Stage 2 LPFP Walbro 450 upgrade As of ~81600 mi: Depending on boost levels, as the stock plugs tend to misfire under big boost. Oct 4, 2020 42 7 0. If one of the cylinders has misfired, the changes in flywheel speed are insignificant. andrei2500; Dec 19, 2024; Replies 5 2007 335i n54 misfire 4, 5, 6 My entire banke two shit out the other day after a down shift. pdf (84. Hi all, I've got a misfire that's really starting to p**s me off. All the other non-turbos have misfire counters for each start cycle, and it will set codes much easier when transient misfires do occur. First, the misfiring started. N54 Dec 19, 2024. According to the log the car is running extremely lean but fuel pressure looks good. Running MHD Stage 1+ with FMIC, Secondary Cat Delete and Dual Intake. I just went stage 1 pure FBo on e30 mix and have been getting misfires under wot. So back on point, after disabling misfire detection on cyl5 above 6k (as well as changing cyl5 pr coil to cyl1) the misfire went away on 6 and came misfired on 1. Recently, with the cool fall weather up here in Canada, on cold and 'wet' mornings my car would be running on 4 or 5 cylinders until it warmed up. There is no RPM fluctuation but you can just feel it in the seat. 019(95770, new 5992's) and then just yesterday put a new index 12 injector in cylinder 1, coded correctly and So I am currently having a misfire issue on cylinder 5! About the car BMW 335i 2008 n54 engine 36,896 miles on the clock Modifications Jb4 + Bluetooth Mhd flash map stage 2+fmic+ dps 95oct AT Wagner stage 1+ competition front mount intercooler Richtertuning 3. I restarted the car and it kept shaking. I should mention the car also N54 misfire/hesitation between 2500 and 4500 rpm 12-27-2014, 04:17 AM. (the car was purchased through someone I know that took care of it) When I got the car it had all index 10 injectors in each bank. I apologize in advance if this has been covered, I looked around and didn't see a thread which exactly matched my problem, only one that was resolved by doing what I have already tried. Turn off car. Car is a 07 335i N54 MSD80. Join Date: Jul 2015. 229k Miles on it Car is a 6AT, FBO with Pure600s Getting a high RPM Cylinder 6 misfire. bwelton Discussion starter. This will cause SOLD - 2009 N54 engine E92 335i coupe, 6AT PD trans, Stage 3 XHP, Built Motor, PI Pure Turbos, Jb4 , Mhd Flash, Trebilia tuned 28 ps, 100% E85, i 440 rwkw Mainline Dyno. 106. Managing Heat: Cooling System Concerns. B. It recently developed a misfire/hesitation between 2500 and 4500rpm. 34. Four hours (or so) later and following morning same thing. Car is a 2009 135i with 65k miles, mods in sig. Below is a list of the various N54 misfire faults: 1. An unusual for an N54 reason for a misfire AFAIK, can add it to the repertoire of things to check in that event You can see why people get anxiety attacks going to AD for anything but servicing. Customer: Wat causing misfire . I have been trying to figure out what is wrong with my cars idle. Today i floored my car in sport mode && all of a sudden engine light came on & the car start to idle roughly but then it went away & the car was good. Turned off pi and car ran slightly better. N54 Misfire Diagnoses Help! I've posted once before but I haven't gotten a reply so, I'll give the whole story with what I've already tried once more before getting it towed to a shop. But the problems still stay with 1 2 and 3. TThe N54 powered BMWs respond amazingly well to tuning, but the increased power has caused some owners to experience misfire issues. If it n54 335i rough idle/misfire startup when car is warm. The idle is kinda rough sometimes and by rough I mean it has some moments when it "shakes" as if the cylinders were out of sync or something. jb4 misfire n54 precision raceworks Forums. About 2-3 weeks ago, I started getting misfires and did a DME scan on my car, which showed that cylinders 4 and 6 were misfiring. For what it's worth, with the JB4, I can clear the misfire fault on the fly and the engine will go back to running smooth, no longer misfiring. Right turn onto the main road, accelerated to about 3k rpm and the codes Strange misfire cyl 4 (n54) Brand new coil packs and spark plugs, fuel pressure high and low looks perfect, MSD81 ECU with working mosfets, index 12 injectors. Check coils, grounds at valve cover, check plugs. I had a misfire happen periodically with one of the index tens in cylinder 6. So far I've had new plugs, new coils, stopped an oil leak from the rocker cover, and a new injector in Cylinder 6. I need to go back and test bank 1 injectors for leaks - the code is on bank 2 so I didn't bother to test bank 1. The cars a fbo (down pipes, intercooler, chargepipe, silicone inlets, cone filters, MHD stage 2+) it's a misfire under heavy load it's always combustion failure and started on cylinder 1 and is now 1 + 5. This is a great blog post from Cobb Tuning and we thought we’d share it out here as well for those interested along with their video. the car But I am experiencing som misfire issues on high rpm and high load. I have a 2008 N54 335i with about 75k miles. 29CE (10702) – Misfire cylinder 2 3. 1. But if i hold the rpm at 4000-5000 it doesn’t misfire at all. Car is misfiring for no apparent reason, started as a small misfire to sounding like a subaru. So I've read just about every thread I could find on this and couldn't really find a definitive answer. My car is currently experiencing a mixture control problem on bank 1 ONLY. N54 We are working on an E40 tune right now but every time the car gets into boost it misfires on cylinder 3 and 5. The DME MSD80 / MSD81 computer is fitted to the following vehicles: BMW 135i 2007-2013 (E82) BMW 335i 2007-2008 (E90) BMW N54 Engines, such as in your 2008 335i, have THREE (3) Coil Ground Points (N52/N51 Engines have only TWO), so that is NOT the cause of misfire on Cylinders 1,2,3, as only 1 & 2 have same Ground Point. I have checked spark plugs, coils and even injectors. To solve this issue the snubbers have to be installed as described here. { Note - NONE of the other INPA versions - from the DISv57 bundles - namely 4. Added techron fuel system cleaner, drove around for a bit, no change. 29CD (10701) – Misfire cylinder 1 2. Drives: 135i. Also, misfires happen on multiple random Hey guys, I have been trying to chase down this misfire I have been having. 10. Yesterday I heard a pop misfire for the first time from a cold start. Hi folks Completely stuck and a bit of a long read n54 heavy misfire after new injectors + coding . Tracked down the misfire to the injector, not the injector itself but improper installation causing an ovalled cylinder head. I was get misfiring on cylinder 3,4,5 scanned with ob2 reader. zomski101 Private. Once you open up the throttle and hit 4-5k in 2nd-4th the car falls flat on its face shutters and shakes with occurring codes. Posts. after it settles out it runs so smooth. It’s showing DME active code 29D0 cylinder 4 misfire. Car has a new crank sensor too. Jump to Latest (Cyl 6 misfire) and P0206 (Injector circuit open Cyl. F40Model Year: 2019 + Previous Generations; F20 / F21Model The damn misfire monitors are turned down so low on the BMW tuning, and it makes for difficult troubleshooting at best. recent work completed related to misfires: low pressure fuel sensor, new plugs, new coils, new turbos, new o2 sensors. Plugs and coils are brand N54 help (misfires) Jump to Latest 2K views 5 replies 6 participants last post by E93_335i Aug 3, 2023. Different codes exist for each cylinder so you can identify exactly where the misfire is occurring. suspenceful 10 Second Club. It's like one cylinder doesn't produce power and the engine 335i N54 Continual Cylinder 6 misfires. 022, new hpfp, lpfp, new vanos solenoids, camshaft position sensors and crankshaft position sensor, running msd81 with mhd stage 2, only code pulled is cylinder 6 misfire. 29CD - DME: Combustion misfires, cylinder 1. Only difference is I never had any codes. I have swapped the coils in the same manner as well as injectors and the misfire stays in those three cylinders. About the car 08 335xi 6at Dci, chargepipe, vrsf 7" hd fmic, muffler delete, fuel it stg2 bucketless lpfp, mhd v5 e40, xHP Stg2 trans flash. New injector, spark plug, coil. description: I am getting an I recognised this as a misfire, no engine light yet. Cylinder 1 misfire. $20/injector seems like a pretty reasonable price, but I was wondering if anyone has had any success with doing this. 1570 posts · Joined 2014 Add to quote; Only show this user #1 · Mar 9, 2022. check the injector that the seal is good. Troubleshooting . E81 / E82 / E87 '13 335IS N54 (1 of 373 LeMans Blue out of 3597 total production e92)- E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial . In this post, I'll explain what that means, and misfire on cylinder 6 on wot. First time it happened (about a week or two ago) I thought it was a fuel injector because I got a N54 Misfire Troubleshooting Post Reply Thread Tools: Search this Thread 09-26-2018, 06:50 PM #1: TheMilkManz. Guarantee it's a misfire. Car then spluttered and farted all the way to the shop. Feb 20, 2024 4 0 0. Trying to fix a cylinder 3 misfire. A quick fix is to clean them. Things I've done: Spark plugs Carbon clean Fuel Injectors Coils LPFP Sometimes it shakes a little bit in the mornings and takes a little longer to start. 5 down pipes Miltek full decat back 3" exhaust system no baffles just back box's I recently bought a e92 335i 2006 with n54 engine. If I put it in drive and drive off shortly after starting it, then the car is fine. I recently realized that I’ve been using this forum to my benefit for awhile now and have been more then enjoying it as E90 N54 misfire NIGHTMARE. Only the INPA 5. 4i v8 Msport, E60 535d Msport. J. When I replaced the Coils and Sparkplugs, I noticed the plugs were foul. The Fellow N54 friends, I would like input and ideas. Car still misfired with pi turned off but not nearly as bad. I'm new to the form and this problem is driving me insane. I've been having a big dilemma about my e92 335i. IIRC, once misfires are identified, fuel is cut off to the offending cylinder(s) to preserve the cats. Hi, I've been having issues with my 56 plate with misfiring, shutting off injectors and a mixture of CEL and EML. Spark plugs are all new ngk 2 step colder and gapped properly, has bimmerlife coils, stage 2 lpfp. With Scanned ob2 reader. The counter of misfires for an actual session is zeroed, when the driving session is started. E81 / E82 / E87 / E88Model I still get misfire detected cylinder 6, Persistent N54 Misfire. I N54 misfire. There's no MAF on an N54 though, so I'm not sure what the similarity would be here. Current mods are just jb4, MHD BEF, and cone intakes. I have swapped coil packs between cylinders 1 & 2, swapped spark plugs between 1 & 2, put N54 . CORRECTION In the case of reproducible “cold start” rough engine running with corresponding misfire faults, replace all three N54 BMW engines with the MSD80 DME software can suffer fuel injector MOSFET driver failure, leading to one of the injectors ceasing to deliver fuel, resulting in engine misfire and rough operation. Just replaced o2 sensors. N54 misfire ideas. Car starts fine, idles fine and drove fine for about 3 minutes. Take it to shop, car throwing code If i produce some misfire after few pulls than the grey marks are getting bigger More misfire bigger marks on the coil You can see the marks on the new coil and the old one I will try to mill the surface sealing area of the spark plug with the tool at the picture that i attached. 6). I recently bought a 07 335i car has 52k miles. Really helps diagnose bent valves on all the older M50/M54/S54s that get an accidental mis-shift that barely nicks the valves, since they misfire lightly on cold start once you bend a few valves. as they threw up engine light a few times. Troubleshooting New. Had the car for about 1 year now on N54 misfire. BMW acknowledged this issue and offered extended warranties and recalls for affected vehicles. N54. I restarted the car and it was back to normal. So, when hitting boost at WOT or even close to it, I get a misfire N54 misfire under boost. I had rebuild my turbos with new CHRAs and re-done the wastegates, replaced oil pan gasket and put everything back together. Previous BMW's were E46 330ci, E53 4. Car is a 2008 335i E93 N54. N54 misfires and rough idle only on cold start and when temperature is cold outside Before anyone says anything, I have read the millions of posts already in the forum and I've tried nearly everything. N54 Misfire spark plugs? Hello bimmer gang, The fuel pump has been replaced I believe from the scanner. My Volvo dealer wanted £1,500 to change front n rear discs n pads and wouldn’t release the car because at 5mm pad left it ‘wasn’t safe’ N54 Misfire!! Help!!!! 12-27-2020, 05:30 AM. It would stutter and sometimes eventually stall producing misfire engine codes P0300 (multiple misfires), P0301 (cyl 1), P0303 (cyl 3), etc. Misfire on hard acceleration. No misfires. Eurofam Private. 17 posts · Joined 2013 Add to quote; Only show this user Since about last year, our 2003 330i was having a problem with cold-start misfires. Jump to Latest 4. if you change injectors they have to be registered and adaptation 2008 535i, N54 engine, 140k miles. This part comprises of 6 MOSFET transistors, with one for each injector to activate fuel injection. The car is completely fine starting up, apart from your typical N54 valve tapping noise (which Never had a misfire when driving spirititly or check engine light. Thanks! P0300 diagnostic code (misfire to random/multiple cylinders) BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > HELP!!! Trying to diagnose misfires on N54. 6 KB, 555 views) SIB 11. Expert. It is also Throwing corresponding misfire codes for bank one. Thread starter maxwell25; Start date Feb 20, 2024; Forums. If you misfire, read codes again and determine which cylinder is misfiring. Carbon cleaning done recently and spark plugs changed. Typically it would misfire enough to throw a CEL, resulting in fuel-cutoff to that cylinder - a re-start would usually cure the problem. kDawg08 New Member. These plugs are recommended for any tuned/modified N54 pushing up to 350-500+whp. Drove my car all day and at night as I'm going home I floor it at a light once its green. Month ago i was traveled with car to long trip vacation with my 335i, so after we went back from vacation. The problem is There is no tool with M12x1. hotbeer; Jun 30, 2024; N54 N54. On cold starts im getting random misfires in cylinder 2,4,6. Apr 5, 2021 4 1 0 Canada Ride E90 N54 ST Apr 5, 2021 #1 Intro: Hello everyone. 000 km (65. I did get INPA to clear codes. andrei2500. 5K. If it's the cylinder you It threw codes for a misfire on every cylinder. Running MHD with a custom tune and BoostBox. mihneagtt New Member. 5k RPM). The car idle stumbles a little here and there. I change spark & coils. Hello, I'm sure thousands of posts have been made about this issue before, I just want to see if there are any other issues that I could be facing. Thread starter kDawg08; Start date Apr 5, 2021; Forums. There are no codes. What are the most common N54 engine problems? Read our guide and learn how to minimize the chances of costly engine failure on your 135i, 335i, or 535i certain ones might not indicate a failed HPFP (such as a cylinder misfire code) P142E: low pressure in HPFP system – injection disables to protect catalytic converters; 2FBF Searching "n54 misfire" comes up with tons of stories of people bringing vehicles back 4 or 5 times to get resolved. Before I discovered the JB, I'd been running cobb stage 1 aggressive with no Just bought this car a week ago. 800 miles) My 335i is misfiring, and seems only to be in low range rpm. Any ideas on what Hey guys, I have been trying to chase down this misfire I have been having. Hey guys just started having an issue again where under light load (cruising under 2500rpm) the car stutters like a N54 misfire ideas. Daven54 Lurker. Save Share Reply Quote Like. It's like one cylinder doesn't produce power and the engine Wastegate rattle is one of the most common problems on N54 engines. Then I cleared the codes, it ran rough for about 10 minutes, and now it feels fine. Car has fresh one step colder plugs gapped to . Above 4500rpm the engine runs fine all the time. The BMW N54 engine has secured its place as one of the most iconic power plants in automotive history, particularly among BMW enthusiasts. . I would shut the car off, wait a minute, turn back on and N54 Misfire!! Help!!!! Hi all, i am a new N54 owner but am no stranger to cars or BMW's. The benefits for most are smoother power delivery, increased power, smooth idle and in some cases a fix for misfires. Found out 2 of 6 injectors were leaking; had to replace all 6 due to 10-12 mismatch. pdf (99. I am getting some sort of limiter or bad misfire under boost around 4-5k rpm. Alright guys, i need some help. Hi All, This is my first post in this forum as a new N54 owner. Hey guys, im novice in this area. Another sign of carbon build-up is engine misfires. N54 335i Rough Idle/Misfire and No CEL. BMW. Recently starting yesterday, the car under light throttle loading up boost right around 3-4k in 2nd-4th is fine and performs fine with no shutters or misfire symptoms. Occasionally on start ups (warm or cold) the misfires would appear, maybe once every week or two. Why is it so important? Very short about theory. When I'm driving, the engine runs smooth. May 20, 2019 11 1 0 Ride Bmw 335i May 20, 2019 #1 I have recently installed precision raceworks coils onto my N54 and have been getting misfires Im FBO excluding a cat back exhaust i 335i N54 Continual Cylinder 6 misfires. Oct 31, 2021 3 0 0. N54 big single turbo runs very lean and misfires. motor still ran fine, just would set inlet VANOS codes below 1200rpm due to clogged oil channels in the head from broken valvetrain pieces getting where they shouldn't. Misfire cylinder 1: Change spark plugs: 29CE: 10702: Misfire cylinder 2: Change spark plugs: 29CF: 10703: Misfire cylinder 3: Change spark plugs: 29D0: 10704: Misfire cylinder 4: Change spark plugs: 29D1 N54 misfire/hesitation between 2500 and 4500 rpm. Swapped coils and spark Said lean run, which isnt undriveable so i continued my drive home. While the N54 is popular for its performance potential, it is not immune to issues. In this blog post, we will take a look at some 1-step colder heat range for knock resistance and misfire prevention; Iridium tip electrodes which are tougher than the stock plugs Nickel-Copper tips; We offer 1-step colder spark plugs for the N54 engine from both NGK and Bosch. Misfire returns at stop light but not nearly as much as when the car is in Parked position. When holding the rpm at 2000, it misfires alot. It being only in even number cylinders is odd to me, are they attached some how electrically? Anyone know of index 12s being bad Hello there ! I have E92 335i N54 with DCT, modded to stage 2+ with all supporting mods ( over 5 years ). I did my plugs a few weeks ago with torque. H. Bimmerpost ☰ Model Selection. I change coil & spark plug. Oct 18, 2016 9,311 4,342 0 AZ Ride 2009 E93 335i Nov 16, 2016 #1 This is a list of codes I found online. My car is feeling sluggish. Threads 503 Messages 5. Rep. BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Hard misfires Go for a drive. M. G42Model Year: Keeping in mind the above points (prevent misfires, promote engine cooling and lubrication, and reduce internal pressures) lets move on to some modifications for the N54. Once home, I got the codes 29E1 for too lean and 29D0 for misfire in cylinder 4. The car is also a 2010 where they fixed the fuel pump issue. 335i N54 - Cylinder 3 then 4,5,6 Misfire - Stumped. 2. It is an auto but the misfire is most prominent when I hold full throttle in a high gear. Mar 20, 2019 4 0 0 Ride BMW e92 335i Mar 20, 2019 #1 Hello everyone, I'm new here. Carbon build-up can prevent proper combustion, which leads to engine misfires. iTrader: N54 Misfire Troubleshooting. I drive it gently, probably too gently to be honest. BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Misfire with no code? Please help Thread Tools: Search this Thread 02-13-2012, 10:34 AM #1: triggz P29cf misfire cylinder 3 P29d9 misfire with low fuel level H2f9a H2fdb H2f9e H2e82 H2e81 H2f9e H29cf H2c7b H29cf . I haven't owned or worked on an N54, but your 29D2 Cylinder #6 "Misfire" code states "Injection was Shut OFF" (Einspritzung wird abgeschaltet) when the Intermittent misfire occurred TWICE, 5 miles (8km) apart per Odometer reading at moment of Fault: 190,120 km & 190,128 km. 2 KB, 421 views) SI B13 14 10 Voluntary Emissions Recall Campaign 10E-A02 N54 Inspection and Replacement of Injec. Running E50 currently. Daily driving and moderate pulls are fine but when I do a HARD pull, it starts to misfire bad. spun hub, valvetrain damage necessitating motor removal. Then still misfiring cyllinder 3. don't bang an N54 off the 2008 N54, 70k miles. Each cylinder has misfire counter outputs, and they contain two kinds of information: a) counter of misfires for the actual session; b) counter of misfires during sessions. Thought maybe it’s coils so I order the brav Oil leaks and engine misfires on a BMW N54 engine? A leaking valve cover gasket is a very likely culprit. Misfires only occur after 6300 rpm in Reason: combination of WOTbox and banging the motor off the limiter doing donuts / burnouts. Apr 19, 2017 1,780 711 0 Ride 335i e93 Apr 5, 2019 #1 e85 @ 80% Flex Fuel e85@ 40% Flex Fuel Misfire returns at stop light but not nearly as much as when the car is in Parked position. 76 posts · Joined 2011 Add to quote; Only show this user #31 I own a 2009 335i xDrive (N54), 6spd with 105km. 06 from the BMW Standard Tools 2. 022 gap still misfire before I can get out of 2nd gear. 6 Customer: I own a 2007 bmw 335i e90 n54 twinturbo. xxx,5. Planning on taking it out tomorrow to take a look, then on Monday I was going to take it to a shop that specializes in injector testing/cleaning. 335i Hey yall, I did the walnut blast the other day and installed index 12s. Called BMW to see when or if the HPFP was changed they said it was replaced back in 2011. doublespaces Administrator. The duration of this "shake" is very short but it BMW models with Turbocharged N54 engines and MSD80 DME . I have no boost leak, I’ve just been running the stock setting on jb4. For the past couple months my 2009 335xi n54 has been throwing a misfire code on all cylinders when going WOT. Recent service in my ownership, new plugs, coolant, rocker cover gasket, oil filter housing. Engine . Thread starter Hutch222; Start date Jan 14, 2023; Forums. N54 . 022”, N54 misfire faults; NOx sensors. BMW Discussion . When the N54 misfires it will generally throw a fault code. 4v8 sport, e60 535d m sport. Lots of 2D92. An example. pdf (193. Missfire Cylinder 1, all out of ideas :/ Missfire Cylinder 1, all out of ideas :/ Does anyone here have any experience with surging under constant throttle input on the lower rpm range with an N54 specifically? I’ll post specific details in the comments but I just want to know if anyone here has ever fixed a surging N54 and how y’all did it. The only other mods I have on the car are an AFE intake and MHD stage 0 for some exhaust burble e92 335i auto trans, stock rebuilt turbos, index 10 injectors, brand new coilpacks and spark plugs gapped to . Go WOT at low RPM (like, 1. N54 stumbling idle. 2008 335xi (n54) warm misfires For some reason my car feels like it has mild misfires when warmed up and sitting at a light or drive through. I have been reading misfire posts after misfire posts and BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > n54 misfire on mhd stage 1+ Google Search Search Forums In this video, I'll talk about how to properly diagnose a BMW N54 engine misfire! Must See!To Purchase My BMW Fanatic Camera Setup ⬇️:EVO GP Pro GoPro Stabil Carbon build up is a common issue on the N54 engine, being one of the early mass-produced GDI designs from BMW. Under boost stft will go to -32%, even under light acceleration. KennyS914. Took it for a good drive the other day, giving it some abuse on some windy roads, with a lot of traction control stepping in as rear tires are pretty bad. I have a couple of niggles with the car which annoy me the first of Repair and improvement kit for BMW Siemens DME MSD80 / MSD81 injection computer: OEM IRF W644B transistors. N54 random misfire after index 12 . HPFP 130309 - N54 - Special Limited High Pressure Pump (HDP) Emissions Warranty to 10 Years or. 22, new coils, and a new, coded Index 12 injector on cyl 6. Good day, I'm getting a misfire on my first 3 cylinders. Can’t remember if the N54 has an eccentric cam sensor like the N52if it does, that sensor has been linked to misfires Hello, I am having a bit of trouble with my car atm, its a FBO n54 135i on MHD stage 2+. 7K views 8 replies 5 participants last post by rm163603 Mar 11, 2022. 29D0 (10704) Most of what I got was that a misfire at high RPM could be a false alarm from the vibration or something and some people fixed it by changing all the injectors and coils/plugs. happened to my 335i and it was just a chord that disconnected frm the BOV causing the rough idle. 02 showed the N54 } N54. That already rules it N54. If you are good, then you're done. I dont know if it is normal. Misfire on CYL6. So I will try to describe more precisely, what symptoms are Many people are asking – why the misfire algorithm tests for different software releases were performed. 82AR/Other stuff652WHP F30 N55 XDrive EBII. Feb 20, 2024 #1 Car misfires in gear 3-6 at high rpm under boost at 20 psi, i have changed N54 misfire under load . Engine. Tried all new seals, tried teflon tape around new seals as well, only about 15 minutes of luck. F40Model Year: 2019 + Previous Generations; F20 / F21Model Year: 2012 - 2018. 1 KB, 591 views) N54 Misfire Issue. 29CF (10703) – Misfire cylinder 3 4. tctyiqjkrmllkerhfqvkfxnqaieraeldfxnelzvxrav