1990 Ford F150

1990 FORD F-150
158,000 MILES • V8 • 4WD • AUTOMATIC
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ALBERT1114
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  • 1 POST
i have a ford f-150 that is blowing oil into the air filter box. someone told me to check the pvc valve, but i can not find one on my truck.
Oct 16, 2008 at 7:45 PM
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BLACKOP555
  • ✓ASE Certified Mechanic
  • 10,386 POSTS
  • ASE Certified Mechanic
could be a bad pcv valve, it is located on the passanger side, very far back of the engine on the valve cover, youll see it right under the manifold.

also check to make sure the oil isnt overfilled, it can cause blowby and this gets into the air filter due to the crankcase breather.
Nov 23, 2008 at 8:59 AM
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