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silverado..runs rough..25 30 miles then runs fine, starts fine

 
JOHN aka Eauto's Avatar
  • Answered by:JOHN aka Eauto
  • The Car Guy
  • Positive Feedback: 96.1 %
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Customer Question

Have 1997 silverado p/u real hard to start when cold. acts as though trying to flood. when starts runs rough and misses for 25 30 miles then runs fine, starts fine.

 

Optional Information:
Year : 1997
Make : Chevrolet
Model : silverado
Engine : 5.7

Already Tried:
changed plugs wires coil and converters and fuel filter

Submitted: 1045 days and 18 hours ago.
Category: Chevy
Value: $9
Status: CLOSED
Picture
Expert:  JOHN aka Eauto replied1045 days and 18 hours ago.

do you have access to a fuel pressure gauge?

Customer replied1045 days and 18 hours ago.

no

Accepted Answer

Picture
Expert:  JOHN aka Eauto replied1045 days and 18 hours ago.

i would rent or buy one. IT sounds like a weak fuel pump, which is very common and all your symptoms point that way.
SFI 385 - 430 kPa (56 - 62 psi)

Expert TypeThe Car Guy
Category: Chevy
Pos. Feedback: 96.1 %
Accepts: 2962
Answered: 8/9/2010

Experience: ase tech

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