2000 GMC Jimmy Fuel Pressure

2000 GMC JIMMY
86,000 MILES • 6 CYL • 2WD • AUTOMATIC
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ROGER MASON
  • MEMBER
  • 1 POST
I have a 4.3 6cyl 2000 Gmc Jimmy it dosen't want to start unless I spray starter fluid down the throttle body. As soon as it starts it runs fine until you shut it off. Then you have to do the same thing all over again. I tested the fuel pressure it is 52psi with only the key on and engin not running. The pressure drops to 0 psi after 2 seconds. I don't want to pull the tank and replace the fuel pump if this is not the problem. Any Ideas!
Apr 29, 2009 at 6:40 PM
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RASMATAZ
  • ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
The fuel pressure should be 60-66psi yours is too low-it shouldn't drop to zero that fast-Think! fuel pump if the injectors/pressure regulator are not leaking
Apr 29, 2009 at 6:51 PM
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