1993 GMC Jimmy Straight gas out of tail pipe

182,834 MILES • 6 CYL • 2WD • AUTOMATIC
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MEAZELL
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  • 1 POST
My Jimmy has a Vortec, 6 cyl. after getting it from my sister, gas has started to shoot out of the tail pipe. My husband and step son are very mechanically inclined but neither have worked on a vortec and dont know what is causing this. I am trying to learn and would like to keep the truck if the repair isnt to expensive or extensive. Any suggestions as to what it may be or what we should look at? It will start and run, however it tries to die not long after starting it up. Any help would be greatly appreciated. Thank you!
Apr 14, 2008 at 5:40 AM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
https://www.2carpros.com/car_repair_video/test_fuel_injection_pressure.htm
Go here and checkout our video. I think you have a problem with the pressure regulator, or a clogged return line.
Apr 14, 2008 at 5:45 AM
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RHALL77
  • ✓Experienced Mechanic
  • 3,361 POSTS
could also be a broken poppet valve line inside the upper intake. you may also wanna look at that.
Apr 14, 2008 at 5:50 AM
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