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  1. E90/E91/E92/E93 (2006 - 2013)
    This is my first forum post and im at my wits end. Been reading for days trying to find a solution and no luck. My wifes 08 335i has been having a constant misfire cylinder 1-3 since we did a valve cover, spark plugs, and coil pack job. We have went through multiple times to verify everything...
  2. E46 (1999 - 2006)
    So I’ve got a 2004 BMW 325i and it had a misfire in like 4 cylinders but it drove fine, ended up being the maf. After a day or so of driving fine it started to slightly misfire again but still pretty drivable. Then it started randomly dropping like half the cylinders, sounds less like a misfire...
  3. General BMW Questions
    Haii guys.. more questions please! The engine was shaky a bit and the check light came on. It happened a couple of times (each time went away, except this time) so I ran the OBD and it said a cylinder is out, I figured as much. So I took out the injector and cleaned it well, the sparkplug is...
  4. E90/E91/E92/E93 (2006 - 2013)
    For the record, I have a 2011 E93 328i with 143k miles. I’ve been plagued with jumping, rough idle, and misfire codes for a while now. The shops all say the same thing: replace coils and spark plugs should solve the problem. After performing this maintenance with OEM parts, I was still plagued...
  5. E90/E91/E92/E93 (2006 - 2013)
    Let me prefix this by saying I have next to no experience working on these cars. I had a P2 Volvo and gained a lot of experience from that. I bought an 06' 330xi with a nice 175k miles on it a few days ago and it ran beautifully, I looked into the common engine faults with these cars and...
  6. General BMW Questions
    I have been having trouble figuring out what’s going on with my bmw, I have a 2000 323i has the m52 with getrag trans. I’m getting codes p0173, p0304, p0306, p0305, p0300, p0601. Not quite sure what’s happening I’ve replaced coil packs, spark plugs (yes they are gapped right) and the coil pack...
  7. F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
    Hi, hoping someone could shed some light on this. I have a 2018 320I x drive, 40,000 miles. About 5 months ago, I started to notice a slight hesitation when going from stop to accelerating. The issue got progressively worse, and now the RPM's rev really high, but no power. It doesn't happen on...
  8. General BMW Questions
    What’s up guys and gal’s, I’ve had my fair share of BMWs and this one just likes to steal from my wallet every chance it has! So this is what’s going on, I’ve been having this misfiring problem with it and thought I would just put brand new spark plugs and coils and it would stop. But nope, that...
  9. 3 Series & 4 Series
    hello, I have been having an unsolvable problem with my 2008 335i, I've determined it to be most likely a wiring problem somewhere between my alternator and my DME, as soon as my car reaches a somewhat warm temperature it turns into a completely different car. it starts to misfire, randomly...
  10. E90/E91/E92/E93 (2006 - 2013)
    Hey all. Running into some engine issues with my N51 2008 328xi, 142k. Was looking to see if anyone has ran into anything like this before. The car had a slight hesitation/misfire for about three days, checked codes at auto zone, replaced the coils which significantly improved the misfire, so...
  11. E90/E91/E92/E93 (2006 - 2013)
    I recently bought a 2010 328i xdrive and it has rough idle, stall out sometimes, hard start condition. It misfires under load when trying to accelerate but runs smooth when up to speed. I ran a smoke test and no smoke or hissing/leaking sounds. Tried using starter fluid and propane all around...
  12. E90/E91/E92/E93 (2006 - 2013)
    Hey everyone, I recently diy’ed my Valve Cover Gasket, Valvetronic Gasket, and Spark Plugs. I go to start up my car after verifying that everything was plugged back in correctly and torqued to spec, and it was misfiring badly. I tried starting it up again and it cranked and tried to idle...
  13. E90/E91/E92/E93 (2006 - 2013)
    I have an 08 335xi stage 1 mhd 91 oct and i have been getting a cylinder 4misfire on cold start , i replaced the injectors and plugs and have tried swithtching around coils and using different ones injector is brand new from fcp euro with about 20 miles on it and it seems like its leaking but...
  14. E90/E91/E92/E93 (2006 - 2013)
    I have an 08 335xi stage 1 mhd 91 oct and i have been getting a cylinder 4misfire on cold start , i replaced the injectors and plugs and have tried swithtching around coils and using different ones injector is brand new from fcp euro with about 20 miles on it and it seems like its leaking but...
  15. E90/E91/E92/E93 (2006 - 2013)
    Rough idle jumping rpm in idle no codes at all happen when I changed sparks 1 step colder ngk gapped to .020 everything was good on the drive home next morning start having problems it’s been a week already I have been through 5 sets of sparks ngk 2step colder and 1step colder I have replaced...
  16. 7 Series - E65 / E66 (2002 - 2008)
    Hey Guys, I just finished up replacing nearly half the engine on the E66 and it's still giving me a really rough misfire at idle, Jerking motion effects at times and acting really overall weird. I just replaced Valve Covers, Gaskets, Eccentricshaft sensors, cam sensors, timing, and all the rest...
  17. E39 (1997 - 2003)
    Kia Ora team! First off, thank you to everyone who (has and in the future) contributes to all these forums, you are the real legends and the world need more people like you! keep being you. Heres the run down, I'll outline the situation, what I've done, and what I'm thinking of doing next...
  18. X5 E70 (2007 - 2013)
    I've read through all the misfire threads on here and anywhere else I could find over the past couple of weeks, but haven't found a solution to a misfire that has started occurring randomly. This may end up a little long, but I'll start from the beginning... Three weeks ago I was taking a road...
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    5 Series DIY
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  20. F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
    Hey everyone, So, I started my 428xi in the morning, and a check engine light popped up on the dashboard. So, I it started shaking and drivetrain malfunction showed up too. It was barely accelerating. I changed all of the fuel injectors, spark plus, and coils. Still doing the same thing. Any idea?
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