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2010 2011 BMW 5 Series Forum F10 Car sputters and misfires...New/ Plugs + Coils did not fix the issue. |
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09-03-2018, 12:30 PM | #1 |
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Car sputters and misfires...New/ Plugs + Coils did not fix the issue.
Hey guys, my car misfires/ sputters around 3200 rpm and I Replaced plugs and Coils with no luck.... Could this be a bad injector or a vacuum leak?
I also notice a slightly rough idle. How to troubleshoot this in ISTA ? Datalog link below u see misfires at about 3200 rpm https://datazap.me/u/ssgm1x/sputter-...log=0&data=3-5
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09-04-2018, 07:27 PM | #3 |
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F10 N55. It starts to sputter around 3200rpm then clears up about 5000rpm. I pulled plugs and they all look great. No fuel smell either... To be sure , I replaced Plugs and Coils and it didn't resolve the issue.
How can I troubleshoot without a Check engine light? My datalogs show misfires at WOT..... I have a BMW warranty but without a check engine light BMW isn't gonna do much for me. Injectors? Vacuum leak ? HPFP? LPFP? I don't want to throw parts at the car. How to troubleshoot this? Any suggestions?
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09-05-2018, 01:36 PM | #4 |
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Can you post the log or a link to it?
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2013 F10 N55 (535i), Pure Stage 2, Fuel-It PI Platinum, Fuel-It Stage 2 LPFP, BootMod3, Custom Turbo Inlet, Custom Cary Jordan Tune, More.. SOLD! 1999 e36 M3 - Estoril Blue - Track Car - S54 Swapped |
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09-08-2018, 01:10 PM | #5 | |
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09-08-2018, 01:12 PM | #6 | ||
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09-08-2018, 01:13 PM | #7 | ||
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09-09-2018, 11:20 AM | #9 |
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Good question. About $650 labor and $650 in parts.
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09-09-2018, 11:40 AM | #11 |
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The stalling on cold starts has happened to me and the LPFP was the cause. Def see stucks solution using a Walbro LPFP
LPFP upgrade https://f10.5post.com/forums/showthread.php?t=1482665 Sputtering can occur on tuned cars, I've had that issue too, tap the plugs down to .20 or .21. Kiss MPGs goodbye. Also make sure to use OEM coils, I used Delphi and had a string of problems. Injectors on our cars are surprisingly durable unlike the N54 problems until it hit index 12 for the fix.
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09-09-2018, 12:12 PM | #13 |
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Actually you're right. I got some off brand coils named Bremi. Huge mistake, get OEM
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