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      05-20-2012, 02:33 PM   #9
megalo
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Drives: 335i Sedan
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Location: St. Louis

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Compression test was good, all within 5 PSI of eachother (165-170 psi holding the pedal down. No clue if the throttle blade actually opened). The culprit appears to have been the fairly bad carbon buildup - though several of the intake manifold bolts were essentially finger tight, so maybe there was a boost/vacuum leak, too.

It is interesting that this could cause a consistent misfire on a single cylinder.



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