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2002 Chevrolet s10 4.3

Submitted: 1755 days and 20 hours ago.
Category: Chevy
Value: $9
Status: CLOSED
Expert:  brian replied 1755 days and 20 hours ago.

Thanks for using JA. You need Between 60 and 65 PSI to start and between 55 to 60 psi to run. The Injectors in this engine require a least this amount to open. The

injectors are poppet nozzle type, even if the injector pulses the poppet nozzle will

not open an spray fuel. I have seen Fuel pumps will 55 psi and the vehicle will not start.

If your lucky with 55 psi you can spray a little carb cleaner in the throttle body and it

will start and might stay running. If this info helps, PLease help me by accepting the

answer and a positve feedback. Thanks brian.

 
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