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98 Buick Regal GS 3800 sg engine starts, runs a few seconds then dies, starts right back then dies

Tiny
CRUZINJ
  • MEMBER
  • 1998 BUICK REGAL
  • 80,000 MILES
With fuel pressure gauge attached-key on reading 42 psi- start car reading 45 psi, needle?Fluctuates violently then dropes to 0 car dies, pressure jumps back up to 45. Starts right back up- duplicates problem, over and over. Replaced regulator same problem, tried bypass trick on fuel pressure resistor-no help
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Friday, February 3rd, 2012 AT 8:06 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Your fuel pressure is low it should read 48-55psi KOEO-

Fuel pump weak or injector/s leaking
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Friday, February 3rd, 2012 AT 8:24 PM
Tiny
CRUZINJ
  • MEMBER
  • 3 POSTS
Thanks rasmataz i'll do testing on these components
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Friday, February 3rd, 2012 AT 9:46 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Your welcome and let us know
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Friday, February 3rd, 2012 AT 10:39 PM
Tiny
CRUZINJ
  • MEMBER
  • 3 POSTS
Thanks guys. Probed each injector with Waekon EFI quick probe. Injectors were fine. Fuel pump is a little weak at steady 40 PSI. Problem was fuel pressure resistor. Running fine.
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Saturday, February 4th, 2012 AT 10:32 PM

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