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BMW 3-Series (E90 E92) Forum
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Jb4 problem
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06-19-2013, 11:56 PM | #1 |
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Jb4 problem
Hey guys, I keep installing my jb4 and a few weeks later I keep getting a check engine light and it's a misfire cylinder. My car has 90k miles right now. I believe my dealer changed my cylinders but I maybe wrong. But is it the jb4 messing up or it's just my jb4? I never had a problem when my car was stock but with the jb4 its giving me a problem. Please someone let me know ASAP, thank you.
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06-20-2013, 12:09 AM | #2 |
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http://www.e90post.com/forums/showthread.php?t=631829
When's the last time you changed the spark plugs? Where in Cali are you located? |
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06-20-2013, 01:43 AM | #4 | |
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06-20-2013, 01:44 AM | #5 | |
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06-20-2013, 08:59 AM | #6 |
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Plugs and/or ignition coil.
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06-20-2013, 10:06 AM | #7 | |
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06-20-2013, 04:25 PM | #8 |
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06-24-2013, 09:40 PM | #10 |
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Sorry guys i forgot the dealer changed my spark plugs 2000 miles ago. This happens to my car often and I take off the jb4 and it is good to go with no problems. Anyone else have expeirnce with this?
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06-24-2013, 09:44 PM | #11 |
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Try replacing the coil first (cylinder 5) and see if that does the trick. If not it could be injectors starting to go (did you get yours replaced by recall?).
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06-24-2013, 09:47 PM | #13 |
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06-24-2013, 09:47 PM | #14 |
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