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Thread: engine trouble
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post #3 of (permalink) Old 08-20-2001, 08:00 PM
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Re: engine trouble

How many miles is on it? Heat the engine up. Then check the compression. Then take the gauge out of the hole and shoot in some motor oil. Use one of those little pump cans and try to squirt it to the oppisite side of the cylinder wall so it will run down and coat the entire ring top. Give it a minuite or so to settle. Then check the compession again. If there is a major increase in compression (I am sure somebody here could tell you how much), the rings are not sealing good in the cylinder. However, I would think this would only test the top compression ring. I would rationilize that if the oil rings failed and the top ring was good, the compression would not be affected. I am not sure if this is a likely scernio or not. However this test is a good place to start. I am sure there is someone who can tell you better. Good luck.
Mike

Real trucks are built, not bought.
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