1993 Chevy Truck oil pressure

Tiny
LANCEB
  • MEMBER
  • 1993 CHEVROLET TRUCK
  • V8
  • 4WD
  • MANUAL
  • 186,000 MILES
Lost oil pressure and would like to know how to tell if the oil broke down or if I lost the oil pump
Saturday, May 16th, 2009 AT 9:50 AM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
If low/no oil pressure is verified by mechanical gauge, then hopefully oil pump.

If oil is contaminated with coolant (chocolate color thin consistancy), then head gasket.
If oil is contaminated, then most likely you also have a main/cam bearing problem and engine will have to be rebuilt.

If oil is OK, then replace oil pump.
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Saturday, May 16th, 2009 AT 10:31 AM

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