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      01-07-2013, 01:54 AM   #193
Jeohn
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Drives: 2007 BMW 335XI
Join Date: Dec 2012
Location: Norman, OK

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I replaced the plugs after unsuccessfully finding a socket (in laws own a machine shop, so machined a 14mm 12 point deep craftsman socket to fit)

After replacing the spark plugs I no longer have misfire's that the ECU detects but I can still hear a misfire and feel the vibration from the engine as it misfires.

Again this is only when the car is cold. After running for roughly 10 minutes at Idle everything feels normal again

Any ideas my friends?