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1993 GMC S15

Tiny
MICHAELCANNON88
  • MEMBER
  • 1993 GMC S15
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 205,000 MILES
My truck keeps flooding out when I try to start it with accelerator to the floor it turns over but floods out again, have changed fuel pressure regulator, map sensor, IACV, plugs and wires. Could it be one of the injector pipetts stuck open if so how could I unstick it w/o replacing the part?
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Tuesday, April 21st, 2009 AT 10:47 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
It could b a stuck injector, but I don't think one would cause the engine to die. Have you checked the fuel pump pressure? I realize you replaced the regulator, but there could still be a problem.
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Wednesday, July 1st, 2009 AT 6:42 PM
Tiny
MICHAELCANNON88
  • MEMBER
  • 3 POSTS
I have replaced the fuel pump as of 1 week ago, still have the problem, and also the fuel pump relay was replaced
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Thursday, July 9th, 2009 AT 3:34 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
It sounds like you have been very thorough. I'm still courious about the fuel pressure. Regardless, if you have good fuel pressure and spark to the plugs, then we need to look elsewhere. With 205K on the engine, have you considered low compression as a problem? Have you checked compression?
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Thursday, July 9th, 2009 AT 5:28 PM
Tiny
MICHAELCANNON88
  • MEMBER
  • 3 POSTS
Yes I have checked compression with a guage in all cylinders and hooked up a fuel pressure guage at the check valve on the back of the intake and all readings are to standard spec.
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Sunday, July 12th, 2009 AT 11:33 PM

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