• Tiny
  • Ricky777
  • 1991 Jeep YJ
  • 6 CYL
  • 4WD
  • manual
  • 176,000 miles

Excessive crank case pressure on 1991 Jeep yj 4.0L, I have changed ccv and checked that system which appears to be operating properly.I changed oil and filter.I did a compression test 135ish across the board w exception to No.1 hole-95lbs. Air box is bubblin w oil entering by valve cover breather hose

Friday, February 4th, 2011 AT 3:29 AM

1 Answer

  • Tiny
  • Ricky777
  • Member

I have also removed valve cover and inspected baffles which are both clear of any debri. All valves appeared to be moving properly when engine turned over. Vehicle did sit for 2years so im hopin its something silly sticking or something.

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Friday, February 4th, 2011 AT 3:45 AM

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