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post #7 of (permalink) Old 11-09-2002, 04:13 PM
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Re: low compression in #2 only showing 89 lbs

Well, we have used a modified sparkplug shell to put compressed air into the cylinder. If the air comes out the intake - intake valve, same for exhaust. Air out the oil cap - usually rings, air out the side or the radiator, head gasket. Air out the oil cap can be head gasket. Needless to say, you need to start with on the compression stroke with the valves closed. The air pressure will usually push the piston to the bottom.
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