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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 10-16-2019, 07:30 PM
fhgrantjr fhgrantjr is offline
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535XI miss fire

Hello, This is my first thread. I have an 08 535XI with 90000 Mi. When I aggressively push the gas pedal The car skips ,all the rest of the time it runs fine. I hooked up a scan tool, and it told me there was a miss fire at cylinder # 6. It did not throw a code. I was wondering if anyone out there had any similar experiences. Thank You.
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  #2  
Old 10-16-2019, 07:50 PM
MysticRob MysticRob is online now
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Sounds perfectly reasonable. Check the usual suspects like plugs, coils, injectors, wiring harness on that cylinder, etc. Mine had the same issue at 100k miles when I bought it, and new plugs solved it. Looked like they were the originals in mine.
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  #3  
Old 10-17-2019, 09:41 AM
audiophool audiophool is offline
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Mein Auto: 2008 535xi (LCI)
Plugs first. These were mine at my first replacement (pic). Gap nearly double original, so the spark would 'blow out' at high speed.

Take a look at your coils, there's a date code. If they're original I'd consider replacing them but if your plugs are very worn the coils are probably fine. I replaced coils dated 11/07 just last year on spec - they hadn't actually failed.

If you keep the old coils in place, swap #6 coil with #3, leaving the rest in their respective cylinders. This way if you have another misfire event it helps eliminate the cause. If misfire happens on #3, you can blame the coil. If it happens again on #6 it could be the injector.
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  #4  
Old 10-17-2019, 03:58 PM
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bmrboy2008 bmrboy2008 is offline
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Sounds like plugs and/or coils for sure.
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Old 10-19-2019, 06:58 PM
fhgrantjr fhgrantjr is offline
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Thanks for the info. I will check the plugs first. At least i have a place to start. I will let you know how I make out, and again thank you very much.
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Old 10-19-2019, 08:36 PM
twh twh is online now
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Most likely it is a failing coil. Just buy a new coil and replace that one. If you really want to try and debug it, you can swap 6 with another cylinder and see if the error follows.
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Old 11-13-2019, 06:46 PM
fhgrantjr fhgrantjr is offline
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Hello, I finally got around to replacing the coils and plugs. I bought a complete set of coils and plugs from FCP Euro. The folks over there recommended not to mix different coil manufacturers. I do not know if this is true but I took their word for it as I have done business with them before and was completely satisfied. The car now runs great. It was not a hard job but it would have taken less time if I had a 14mm 12 point thin wall spark plug socket that I had to chase down. Just some info that I am passing on to someone else that may want to change plugs in a BMW.
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