Compression issues

2005 JEEP LIBERTY
131,000 MILES • 3.7L • 4 CYL • 4WD • AUTOMATIC
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DIANA HARR
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My vehicle only has 40% compression in cylinder four. Was told the engine is bad and would need to be replaced. What are your thoughts on this?
Feb 12, 2017 at 8:27 AM
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HMAC300
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compression should be with in 20% of highest one. it can be a valve bad or blown head gasket. If you have a small camera to get in spark plug hole check for hole in piston if that is the case or piston all burnt up on edges then i would say new engine.
Feb 12, 2017 at 10:41 AM