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Discussion Starter · #1 ·
hi i recently bought a e36 318 is coupe ran fine when i bought it but today 20 mins into driving started missfiring slightly you can sometimes rev through the missfire and it will be ok for about 2-3 mins but thens starts again it only does this when warm. can any1 help cheers chris
 

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I would be checking for any air leaks first from split hoses, split vacuum pipes, split engine breather pipes or split induction pipes, also any valves and diaphragms that may have failed. Any air that is sucked into the engine should travel past the Air flow meter otherwise it will give you a running fault and can trigger a Airflow meter fault code.

Other factors that can contribute to this are coil packs and cam/crank shaft sensors.

Start with the first point I mentioned as this is the most common:thumbsup
 
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