ITS START AND DIE I GOOD FUEL PSI NEW FUEL ...

  • Tiny
  • johndavey
  • 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

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Sunday, November 11th, 2012 AT 12:57 AM

12 Replies

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 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
  • Member

Its new what the pressure got to be

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Sunday, November 11th, 2012 AT 1:04 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 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

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
  • Expert
  • 25,556 posts

8th digit

Roy

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Sunday, November 11th, 2012 AT 1:31 AM
  • Tiny
  • johndavey
  • Member

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
  • Member

What do u think it is

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Sunday, November 11th, 2012 AT 1:39 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 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
  • Member

How do u check that

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Sunday, November 11th, 2012 AT 1:43 AM
  • Tiny
  • johndavey
  • Member

Where is it on a 5.3L vortec

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Sunday, November 11th, 2012 AT 2:10 AM

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