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Re: Farmall M Compression
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Posted by Randy in NE on June 17, 2004 at 04:25:41 from (216.58.237.20):
In Reply to: Farmall M Compression posted by Bart on June 17, 2004 at 01:29:44:
The only thing that would cause NO compression would be if all four cylinders lost physical integrity at the same time. This would be like if a valve is stuck open on every cylinder. Or all of the rings broke somehow. Or you have a massive crack in the head or block. I highly doubt any of these scenerios. I would verify the compression tester on another vehicle. Are you getting a good seal around the spark plug hole when you are testing? Are you turning it over several times to make sure you are getting a good test? Even if the camshaft quit turning you are going to get some compression on at least one of the cylinders because you can not physically get a valve open on all 4 cylinders at one time unless something drastic has happened on the top end of the motor.
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