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1993 Ford F-150 no oil pressure, but oil light is not on?

Tiny
AVIDHUNTER3
  • MEMBER
  • 1993 FORD F-150
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Can anyone give me any advice? I am not a car person, but I sure wish I was! Truck was running ok, b ut I noticed the oil pressure gauge was low this morning. Checked oil, and itwas fine. (It does need an oil change though). Now the gauge is reading zero. I made it home, which is about 15 miles, it ran fine, but was making a slight knocking. Does that mean the oil pump is out? And if it is, how hard is it to change? I called around and the cheapest is like 350 plus the part, and I literally cannot afford that!
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Wednesday, June 17th, 2009 AT 5:32 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Now the gauge is reading zero. I made it home, which is about 15 miles, it ran fine, but was making a slight knocking

You need to physically check the oil pressure with a mechanical gauge to confirm that the oil pump is doing its job if so could mean engine bearings
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Wednesday, June 17th, 2009 AT 6:28 PM
Tiny
AVIDHUNTER3
  • MEMBER
  • 2 POSTS
I just wondered since it is knocking if that means it is for sure out?
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Wednesday, June 17th, 2009 AT 6:32 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The only way to tell is to check the oil pressure with the gauge. The key here is the slight knocking noise the oil might not be making it up the upper end of the engine due to a defective oil pump or engine bearings
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Wednesday, June 17th, 2009 AT 6:37 PM

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