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Compression buildup in sump

Tiny
CAROLDUTOIT
  • MEMBER
  • 1992 TOYOTA COROLLA
  • 350,000 MILES
I have a 1992 Toyota Corolla 1.6 with a 4AF engine. On a trip last week it lost power and built up compression in the sump, and missing on no 2 piston. We have checked to make sure all 4 plugs are firing, and replaced cylinder head gasket. Have also check to make sure all the valves are ok. Can anyone perhaps give us any suggestions as to what can be wrong.
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Saturday, October 13th, 2012 AT 6:46 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
It sounds like the rings have failed on a cylinder allowing compression into the crankcase.

Roy
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Saturday, October 13th, 2012 AT 7:21 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
A compression test might show you something.
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Saturday, October 13th, 2012 AT 7:40 PM

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