1993 Pontiac Sunbird Oil Leaks

1993 PONTIAC SUNBIRD
123,000 MILES • 6 CYL • FWD • AUTOMATIC
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NOBLE ONE
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  • 1 POST
What could be the fault if there is alot of oil in the air filter
Sep 15, 2008 at 2:00 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
HI there,

Oil in the air filter is a sign of an engine that is breathing heavy, this is caused by worn piston rings, compression by-passes the rings and over pressurizes the sump carrying oil vapor into the air cleaner visa the PVC system, the oil then collects in the air filter.

Mark (mhpautos)
Sep 15, 2008 at 10:53 PM
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