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Home >> GMC >> 1996 >> Forward Control 4.3 W >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Engine Controls - Specifications - 5.9L Diesel) >> Fuel System >> Fuel Pump

Fuel Pump

WARNING: This page is about a different car, the 1995 Dodge Pickup and 1995 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
FUEL PUMP

Application Pressure - psi (kPa)
Fuel Transfer Pump 25 (172)
Fuel Injection Pump 17,405 (120,007)
WARNING: Injector pump on 5.9L diesel engine delivers fuel to each injector under extremely high pressure. Pressure in high pressure diesel fuel lines may reach 17,405 psi (120,007 kPa). High fuel injection pressure can cause personal injury if contact is made with skin. Use a sheet of cardboard when checking for fuel leaks.
FUEL TRANSFER PUMP SPECIFICATIONS (1)

Engine RPM (2) Output Ounces (Liters)
200 10.2 (.302)
225 11.9 (.352)
250 12.7 (.376)
275 13.6 (.402)
300 15.3 (.452)
400 20.3 (.600)
(1) Output volume is measured after cranking engine for 30 seconds. Do not crank engine for more than 30 seconds.
(2) Minimum inlet restriction is 4 in. Hg vacuum.
INJECTOR OPENING PRESSURE (1)

Application psi (kPa)
Ram Pickup 3700-3900 (25,512-26,891)
(1) If opening pressure is below specification, replace injector.