1991 Ford F150 oil ----------air filter

1991 FORD F-150
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FREDDY FORD
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  • 1 POST
Engine Performance problem
1991 Ford F150 V8 Automatic 44256 miles

just got this truck and change alot of things when i check the air filter again there was oil in it alot of oil and the air filter is new what cause this and how can i fix this thank you so much
Nov 4, 2008 at 5:16 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Check PCV system bad PVC can cause this. It is uhder intake on pass side. If my memory has not failed
Nov 4, 2008 at 5:49 AM
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