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General Forums => The Mess Hall => Topic started by: bestos on December 19, 2008, 06:14:18 AM
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yo,
had ticking when i accelerate for about the last year. and power has definiately dropped. I KNOW for certain that i cant see the stud/nut on the rear hole for the exhaust mani (so i'm sure it leaks there) BUT when i put my hand behind the motor along firewall, i Feel relatively cool air moving back there (not exhaust gases).
is it is possible my real power loss is coming from a bad head gasket on the very back of the motor? i dont have any water/oil mixing. I have replaced my cat, which did help things some, but i know that ticking during acceleration is telling me something and so is the blowing air. Any thoughts?
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yeah, and i know -- compression test is forthcoming over my 2 day break next week. I want to see how the 4th cyclinder stacks up against the other.
i really believe the very rear of the gasket is blown and b/c there are not the water/oil ports back there, i will only see a compression prob.
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It could also be a burnt valve. The compression test will find that also. You can buy a fitting that screws into the spark plug hole to allow you to put air (pressure) on the cylinder (not too much now!). That may be useful for diagnosing your problem.
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called a LEAK DOWN test correct? just making sure i got the right test. that checks the valves of a particular cyclinder after the compression test shows i have a problem right?