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1999 GMC Jimmy CAR WON'T START WITHOUT USING STARTING FLUID

Tiny
GARY KRUEGER
  • MEMBER
  • 1999 GMC JIMMY
1999 GMC Jimmy 6 cyl Two Wheel Drive Automatic

MY JIMMY WONT START WITHOUT USING STARTING FLUID. THERE ARE NO CODES CHANGED PLUGS ROTOR, CAP HAD COIL AND INGNITION MODULE CHECKED ALL OK. FUEL PRESSURE WITHOUT STARTING IS AT ABOUT 44 PSI. ONCE I START THE TRUCK WITH STARTING FLUID SPRAYED INTO THE INTAKE IT SEEMS TO RUN FINE. IT WILL RESTART AFTER 5-10 MINUTES OF SITTING BUT NOT AFTER AN HOUR. WHAT CAN I DO
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Saturday, October 18th, 2008 AT 2:00 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What type of fuel system do you have? TBI/MPFI/CPI Spider Vortec -sounds like the fuel pressure is too low-should read 60-66psi
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Saturday, October 18th, 2008 AT 2:05 PM
Tiny
GARY KRUEGER
  • MEMBER
  • 15 POSTS
I KNOW IT IS NOT A TBI NOT SURE MPFI OR CPI SPIDER IT IS A VORTEC ENGINE I ALSO CHANGED THE FUEL FILTER IF THE PRESSURE IS TOO LOW WHAT WOULD CAUSE THIS OR WHAT DO I HAVE TO DO TO FIX THIS.
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Saturday, October 18th, 2008 AT 4:45 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Double check the fuel pressure if it continues to go low -replace the fuel pump after you checked the pressure regulator for leakage
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Saturday, October 18th, 2008 AT 5:03 PM

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