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Dave Nova
Dave Nova, Chevrolet Technician
Category: Chevy
Satisfied Customers: 19452
Experience:  ASE Master Certification. GM World Class Certification
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what is the fuel pressure spec for a 2004 chevy impala w/380

Resolved Question:

what is the fuel pressure spec for a 2004 chevy impala w/3800?
Submitted: 9 years ago.
Category: Chevy
Expert:  Dave Nova replied 9 years ago.

You did not state whether or not the engine is supercharged(vin 1). Here are the specs.


364-405 kPa (53-59 psi) VIN K


334-375 kPa (48-54 psi) VIN 1


If you cannot acheive the proper pressure, the fuel pump is the most likely culprit.

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