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Fuel Pump

NOTE: Fuel pump performance is a measurement of fuel pressure and volume availability, not regulated fuel pressure.
FUEL PUMP PERFORMANCE

Application psi (kg/cm2 )
Carbureted Vehicles
4.2L 4-5 (0.28-0.35)
5.9L 5-6.5 (0.35-0.46)
Injected Vehicles
2.5L TBI 14-15 (0.98-1.06)
4.0L MPFI 31 (2.18)