Is this a misfire or an engine vibration? Has it ever set a check engine light? Try blocking the wheels, setting the e-brake and have it in D, unplug injectors one at a time quickly to see if it gets worse. If you get one that doesnt make a difference, that will be the offending cylinder. If none of them make a difference you may be dealing with an engine vibration, double check the mounts to be sure you dont have one that is collapsed a little. Why was the timing belt already changed (20k on new belt, 60k on car)
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Wednesday, June 2nd, 2010 AT 12:35 PM