1990 Ford F-150

Tiny
ALBERT1114
  • MEMBER
  • 1990 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 158,000 MILES
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.
Thursday, October 16th, 2008 AT 7:45 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
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.
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Sunday, November 23rd, 2008 AT 8:59 AM

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