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1985 Jeep CJ-7 blowing oil

Tiny
2CP-ARCHIVES
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  • 1985 JEEP CJ7
  • 6 CYL
  • 4WD
  • MANUAL
  • 225 MILES
1985 Jeep CJ-7 mileage: 225,000. My engine is blowing oil out around the distributor shaft, oil dip stick, oil pan, and up into the air filter. A compression check shows approximately 160 PSI, dry to 175 PSI wet. All vacuum lines intact and pulling approximately 20" HG including through the PCV valve. Would this be a piston and ring problem or just the head (valve seals) or something else?
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Tuesday, October 12th, 2010 AT 9:44 PM

1 Reply

Tiny
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You may have piston ring problems. The PCV valve can only handle so much blow by, the excess will result in the problem you are experiencing. Try a cylinder leak down test to check the rings for blow by.
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Tuesday, October 12th, 2010 AT 9:48 PM

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