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JOHN aka Eauto
JOHN aka Eauto, The Car Guy
Category: Chevy
Satisfied Customers: 16039
Experience:  ase tech
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silverado..runs rough..25 30 miles then runs fine, starts fine

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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.
Submitted: 7 years ago.
Category: Chevy
Expert:  JOHN aka Eauto replied 7 years ago.
do you have access to a fuel pressure gauge?
Customer: replied 7 years ago.
Expert:  JOHN aka Eauto replied 7 years 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)
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