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Need help releasing air, possibly, from oil system

Tiny
DIGDUG123
  • MEMBER
  • 1996 FORD F-250
  • 384,500 MILES
No oil pressure after changing o-rings on oil cooler, under exhaust manifold. Vehicle won't start.
had to use ether to start engine, noticed oil gauge showed oil pressure at normal for a couple seconds then, went to "0" and then shut down.
Tuesday, January 3rd, 2012 AT 3:33 AM

4 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
You might have to remove the oil pan and re prime the pump. Vasaline packed into the pickup tube should do the trick.
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Tuesday, January 3rd, 2012 AT 9:37 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
I would suggest pulling the pan and inspecting the pick up screen. It is very rare for a pump to have pressure and then lose it unless the pick up is either restricted or sucking air.
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Tuesday, January 3rd, 2012 AT 10:55 AM
Tiny
DIGDUG123
  • MEMBER
  • 2 POSTS
My oil is changed on a regular basis so its clean all of the time. I've never let go dark. Is there any other way to reprime the oil pump like, taking off the valve covers and loosening the allen screws just below the rocker arms? Theres two of them and I was thinking of loosening them and maybe bleading the air out of the system thru them as I remotely crank the engine.
What do you think?
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Wednesday, January 4th, 2012 AT 4:46 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Only reliable way is the way I said, but you would be better of pumping through the cooler lines.
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Wednesday, January 4th, 2012 AT 9:36 AM

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