Question about Cadillac Seville
The gap is perfectly fine - ideally it should be at .060.
Your engine has 4 coils - one for 2 cylinders. If the coil is bad both cylinders connected to that coil would be misfiring. Since on your case only one is then the problem is either in the high tension wire (it's broken - test it with an ohmmeter, or it shorts to the ground - check it by looking after the spark at night with the engine idling) or the spark plug itself it faulty - replace it.
Posted on Jul 28, 2010
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Posted on Jan 02, 2017
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