Compression

2000 TOYOTA TACOMA
200,000 MILES • 2.7L • 4 CYL • MANUAL
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MARK MADDUX
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Three of my cylinders tested at 150 lbs comp but one of them tested at 90 lbs. just wondering why such a big difference?
Mar 21, 2018 at 3:33 PM
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KHLOW2008
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It could be due to dry or worn piston rings, leaking valves or head gasket. Give it a wet test and if the compression increases, that would be a fault of the piston rings.
Mar 24, 2018 at 8:27 AM