1995 GMC Jimmy Stalling out

Tiny
TLOO
  • MEMBER
  • 1995 GMC JIMMY
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
My truck has just had a fuel pump out on a couple months back and it was all swell and dandy and then starting out of nowhere, while driving to and from work my truck would rev itself up repeatedly. Recently, my truck has struggled to start and ehen it does- smoke would come out of my exhaust pipe in puffs of grayish smoke. It wasnt a constant smoke either, puffs every couple seconds. It started to stall out on me while accelerating and slowing down. I just put in a new idle air control sensor and hoped that would resolve it, but it didn't. What could it be? Does it need a tune-up or is the motor going out on me?
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Monday, November 9th, 2015 AT 3:04 PM

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Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,005 POSTS
If you are seeing grayish white smoke, chances are there is a head gasket leaking coolant into the engine. Check the oil to see if there is a milky substance mixed in with it and check to see if the coolant level is dropping.

Let me know what you find.
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Monday, November 9th, 2015 AT 5:39 PM

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