Ford Ranger 4.0 engine pinging

Tiny
VANN
  • MEMBER
  • FORD RANGER
I have a 1998 Ford Ranger XLT 4x4 with 4.0 engine and 122,400 miles.

Recently, the engine started pinging and burning oil.

Last oil change, the oil was about a quart low on 5000 miles. Since then, I have added 4 quarts in less than 3000 miles.

The pinging doesn't start until the engine has warmed up and run for 20 or 30 minutes.

The engine still has relatively good power for an engine with 122,400 miles on it. It starts easily and runs smooth once speed levels out. The engine does change rpms slightly during accelaration.

I have taken it to 2 shops and they can not find the problem. Can you help?

Thanks,

James
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Tuesday, July 3rd, 2007 AT 8:00 AM

2 Replies

Tiny
JACK42
  • MEMBER
Does it have a low speed or miss at idle? Have the shop do a leak down test on all cylinders to eliminate the possibility of a broken ring or the such. Might even be an intake gasket that has been "sucked" and is drawing in the oil from there
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Tuesday, July 3rd, 2007 AT 8:10 AM
Tiny
MERLIN2021
  • EXPERT
As long as you're burning this much oil, and it is alot! O2 sensors are being adversly affected! Fuel mixure can't be set properly!
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Tuesday, July 3rd, 2007 AT 8:12 AM

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