Do a "wet" test with a couple of ounces of oil in each cylinder. If the compression comes up you've got piston ring problems. If it doesn't you might get by with a valve job. Low compression on side by side cylinders can be from a leaky head gasket. The zero pressure cylinder sounds like there's a badly burned or stuck valve.

Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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