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Fuel pressure

Tiny
JOHNANDERSON
  • MEMBER
  • CHEVROLET SILVERADO
I have a 1999 Chevrolet Silverado 5.3 ltr engine with 112,000 miles. My fuel pressure gauge shows 59 lbs when the key is first turned on. After the pump shuts off after 1 1/2 - 2 seconds the fuel pressure drops to 0 immediately drops to 0. Is this normal or do I have a fuel leak somewhere. I have replaced the fuel filter, pump, heat sensor and fuel regulator.
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Tuesday, September 25th, 2007 AT 3:20 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
It shouldn't do that not that quick-

If pressure drops quickly like that and all that stuff you have changed the vehicle may have a leaky fuel line/one or more leaky fuel injectors.
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Tuesday, September 25th, 2007 AT 3:30 AM

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