3500 4x2 Pickup L6-359 5.9L DSL Turbo (1994)
Transfer Pump Fuel Line Locations
1. Disconnect the fuel line fitting on the top of the fuel transfer pump. Remove fuel line from pump at this point.
Fuel Pressure Gauge Connections
2. Attach (The in) a fuel pressure gauge at this point.
3. Start the engine and measure the output pressure. Minimum pressure is 172 kPa (25 PSI).
4. Proceed to the Fuel Volume Test.
Fuel Volume Test
Fuel volume-versus-engine cranking RPM are used for the test.
Electronic Components
WARNING: TO PREVENT THE ENGINE FROM STARTING, DISCONNECT THE PIGTAIL HARNESS AT THE FUEL SHUTDOWN
SOLENOID. USE CAUTION AS RESIDUAL FUEL IN THE FUEL INJECTOR PUMP MAY CAUSE THE ENGINE TO START AND RUN
TEMPORARILY. CONTINUE TO RUN THE ENGINE UNTIL IT QUITS BEFORE PERFORMING THE FUEL VOLUME TEST.
1. Connect a hand held tachometer to the engine. Use Cummins part number 3377462 or an equivalent.
