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1989 Jeep Cherokee

Tiny
JERRYLINDA7
  • MEMBER
  • 1989 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • MANUAL
  • 22,000 MILES
Compression on 5 of 6 cyl 125, one cyl 50 plug wet.
My problem is I have gas washing into the oil pan. I'm assuming it is a broken ring, but could it possibly be a gas pressure regulator. How can you tell the difference?
Sunday, April 5th, 2009 AT 5:39 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,170 POSTS
If the compression is that low, the fuel isn't being burned and building up and washing into the crankcase. If you want to determine if it is rings, do what is called a wet compression test. Pour oil into the cylender and quickly check compression. If it goes up, the rings (at least) are worn, broken, or damaged.

Let me know what you find.

Joe
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Tuesday, April 7th, 2009 AT 8:07 PM

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