No compression

2009 CHEVROLET TRAVERSE
5,000 MILES • 3.6L • 6 CYL • 4WD • AUTOMATIC
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DYKES2
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bought a re-manufactured 3.6L engine for my vehicle listed above. After about three or four months it started to lose power and not running on all cylinders. Compression test showed no compression in back two cylinders and little pressure in the middle two cylinders. What could be the problem?
Mar 30, 2019 at 2:57 PM
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ASEMASTER6371
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Good evening,

It could be either a timing issue between the crank and camshaft of it could be valves.

You need to air up each cylinder one at a time and see where the air is leaking from. That will tell you if it is valves or piston.

Roy
Mar 30, 2019 at 7:31 PM