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Its start and die I good fuel psi new fuel.

Tiny
JOHNDAVEY
  • MEMBER
  • 2002 CHEVROLET AVALANCHE
  • 147,476 MILES
Its start and die I good fuel psi new fuel filter new fuel pump if I spray starting stuff in the intake it will good stop spraying it dies
Sunday, November 11th, 2012 AT 12:57 AM

12 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Check the fuel pressure. It may be a failed pump

Roy
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Sunday, November 11th, 2012 AT 1:00 AM
Tiny
JOHNDAVEY
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  • 12 POSTS
Its new what the pressure got to be
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Sunday, November 11th, 2012 AT 1:04 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Measure with the Key On Engine Off with the fuel pump commanded ON.

Vin (V, T, U)
Fuel Pressure (gasoline) 55-62 psi

Vin (Z)
Fuel Pressure (ethanol) 48-54 psi

These specifications are taken from the Fuel System Diagnosis. For complete testing of fuel pressures and volume see Fuel System Diagnosis, See: Powertrain Management Computers and Control Systems Testing and Inspection
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Sunday, November 11th, 2012 AT 1:13 AM
Tiny
JOHNDAVEY
  • MEMBER
  • 12 POSTS
Thank be right back to tell u what it is and how do u fine what ie is in the vin how many # in
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Sunday, November 11th, 2012 AT 1:17 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
8th digit

Roy
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Sunday, November 11th, 2012 AT 1:31 AM
Tiny
JOHNDAVEY
  • MEMBER
  • 12 POSTS
Key on pump run for 2 sec or so about 58 psi
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Sunday, November 11th, 2012 AT 1:34 AM
Tiny
JOHNDAVEY
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  • 12 POSTS
What do u think it is
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Sunday, November 11th, 2012 AT 1:39 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Hmmmmm. 58 lbs. Thats good enough to start it. There is no toggle for the injectors. I would check the crank sensor as it controls the injectors being toggled.

Roy
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Sunday, November 11th, 2012 AT 1:41 AM
Tiny
JOHNDAVEY
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  • 12 POSTS
How do u check that
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Sunday, November 11th, 2012 AT 1:43 AM
Tiny
JOHNDAVEY
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  • 12 POSTS
Where is it on a 5.3L vortec
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Sunday, November 11th, 2012 AT 2:10 AM
Tiny
JOHNDAVEY
  • MEMBER
  • 12 POSTS
How do u test a crank sensor on a 5.3 L vortec
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Sunday, November 11th, 2012 AT 2:45 PM
Tiny
JOHNDAVEY
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  • 12 POSTS
I put in a new crank sensor and it still doing it what could it be
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-1
Sunday, November 11th, 2012 AT 11:07 PM

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