No compression

Tiny
DYKES2
  • MEMBER
  • 2009 CHEVROLET TRAVERSE
  • 3.6L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 5,000 MILES
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?
Saturday, March 30th, 2019 AT 2:57 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
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
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Saturday, March 30th, 2019 AT 7:31 PM

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