Chevrolet Fuel Pressure Specs Type Fuel Pressure PFI 33-38 PSI TPI 5.7L 35-39 PSI TPI 5.0L 42-46 PSI CFI 9-13 PSI TBI 9-13 PSI Updated on 04/13/2022 Was this article helpful? Yes No Need Support?Can't find the answer you're looking for?Contact Support