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Misfire reoccur??
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| 05-13-2012, 05:27 PM | #1 |
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Captain
 
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Can a misfire reoccur on same cylinder if all spark plugs been replaced and that same injector and coil have also been replaced.
Changed cyl 2&3 coils and injectors like 8 months ago. Just reinstalled tune and now a misfire on cyl 3 plus loss of power on wot with increased boost. Also sounds like. Subaru with exhaust lol
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| 05-13-2012, 05:44 PM | #2 | |
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| 05-13-2012, 06:37 PM | #3 |
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Lieutenant Colonel
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Could be fuel pump too. But to answer your question, yes, it could be one of the same parts again. It sucks, but it could happen.
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Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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| 05-13-2012, 07:24 PM | #4 |
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Could bad O2 sensors also cause this?? I also get random shaking while driving....
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| 05-13-2012, 07:35 PM | #5 |
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Who installed the parts? Do you know for sure if the injectors were coded properly, or if the coupler rings were installed on the injectors? You'd be surprised how even BMW dealers miss those things. Because even a non coded injector with a missing coupler ring will still work ok for awhile, but throw a tune on it, and will go bad quickly... Dont ask me how I know... Let's just say now that my car is out of warranty, it's never going back to a dealer again!
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2009 Z4 35i 6mt, MMP Stage 3 turbos, MMP outlets, custom inltets, VRSF 7.5 race IC, ER charge pipe, Tial BOV, Fuel cell w/ Fuelab pump, filters & regulator, MMP port injection, fuel return line, Bluetooth ethanol sensor, MHD 100% E85 tune, PR coil packs, Spec 3+clutch, Mfactory flywheel, AR downpipes, single 3.5" into dual 3" exhaust, H&R coils, 19" 2-piece wheels, 235/19 & 275/19 RE11 tires
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| 05-13-2012, 07:38 PM | #6 | |
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| 05-14-2012, 04:11 PM | #7 |
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Update. Did a couple pulls today on map 5. I got that reduced power feeling and CEL flashing. Codes are misfires on 4 5 6 cyl and on multiple cyl plus the obvious lambda codes. Yesterday the misfire was only on cyl 3. Weird.....
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