1986 Ford F-150 Oil Pressure

Tiny
LABMONKEY76
  • MEMBER
  • 1986 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 215,000 MILES
This engine does leak oil, however even after filling with oil or changing oil I lose oil pressure at idle after about 15 minutes of driving. The pressure drops to zero while idling at a stoplight for example and the engine makes bad noises and sounds generally unhealthy. At highway speeds the pressure will sometimes return, sometimes not. Give the truck a break and start it up, and its fine, but after 10 min or so the pressure will drop again. What can I do to help this? Additives? Change oil pump? Pray and wait for old old truck to die?
Tuesday, July 7th, 2009 AT 4:52 PM

2 Replies

Tiny
BMD1488
  • MEMBER
  • 1 POST
I pretty much HAD same problem. Now the oil pump in my '86 F150(5.0L)quit. Can't get help replacing it, everyone wants a buck.
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Thursday, October 8th, 2009 AT 10:23 AM
Tiny
JEEPFAN
  • MECHANIC
  • 135 POSTS
Most likely the oil pump is failing avoid driving the truck until the pump is replaced to avoid damaging the engine
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Thursday, October 8th, 2009 AT 10:37 AM

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