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oil and plug problem

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Old 01-07-2010, 08:06 PM
truckerboy truckerboy is offline
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oil and plug problem

ok, i got a 81 f100 with a 300 engine. There is oil on the plugs, and it is fileing them out. Someone tod me that it may be the valve covers, but smeone else sad it is the rings. can any of yll straiten this out.
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Old 01-09-2010, 06:22 PM
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check the compression, see how even they work out, then do a leak down test to see if the compression holds. I susspect worn, or broken rings
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Old 01-09-2010, 06:37 PM
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No way a valve cover leak will foul a plug. Do a leakdown test on ALL cylinders and see what your have. You prob. have worn rings.
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Old 01-09-2010, 08:47 PM
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oil fouled plugs is usualy a sign of worn valve guides or valve seals. broken or worn rings can do it but alot less common.
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