Compression buildup in sump

1992 TOYOTA COROLLA
350,000 MILES
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CAROLDUTOIT
  • MEMBER
  • 1 POST
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.
Oct 13, 2012 at 11:46 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
it sounds like the rings have failed on a cylinder allowing compression into the crankcase.

Roy
Oct 13, 2012 at 12:21 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
A compression test might show you something.
Oct 13, 2012 at 12:40 PM
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