What is wrong if there is oil on my 36 spark plug?

2003 PONTIAC MONTANA
118,730 MILES
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RAINSRAE
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I have a 2003 Pontiac Montana, and the engine is shaking pretty good and we were getting a code for cylinder 6 misfiring so we replaced the plug and wire and found that the plug had oil on it from the inside. Its not staling anymore but it does have some white smoke from the exhaust here and there and is still shaking and the code is back and the engine light is flashing now.so my question is what could be wrong?
Jun 27, 2012 at 12:04 AM
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RAINSRAE
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iam very sorry I meant that to say #6 spark plug!!!!!
Jun 27, 2012 at 12:06 AM
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ASEMASTER6371
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start with a compression test. then a leak down test to verify a head gasket for the white smoke.

check for spark to the plug. last, check for the injector to be working.

Roy
Jun 27, 2012 at 12:10 AM
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RAINSRAE
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How do I do a compression test and the leak down test? I guess I what i mean is what tools do i need to do this and how?
Jun 27, 2012 at 12:17 AM
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ASEMASTER6371
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a compression tester and a leak down tester. you can rent these from a parts store.

Roy
Jun 27, 2012 at 12:23 AM
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RAINSRAE
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thank you very much i will try these things right away.
Jun 27, 2012 at 12:30 AM
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JACOBANDNICKOLAS
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There are directions on our homepage under the DIY section.
Jun 27, 2012 at 3:29 AM