1989 Other Mitsubishi Models compression

1989 MITSUBISHI
190,000 MILES • 4 CYL • 2WD • AUTOMATIC
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TIMSMIGHTYMAX
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i got this pickup that is used for work.i am not getting compression out of the third valve.is it safe to assume that i need to get the valve machined or what else could it be?
Dec 27, 2007 at 3:30 PM
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MHPAUTOS
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Hi there,

An air pressure test will prove the valve problem. If your valves are adjustable, make sure that they have clearance when hot, if so one would presume a valve has burnt out. but the air pressure test will prove it.

Mark (mhpautos)
Dec 27, 2007 at 3:48 PM