The fuel filter assembly has a Water In Fuel (WIF) sensor that controls the operation of a warning lamp in the instrument cluster (refer to…

The fuel filter assembly has a fuel heater (refer to Figure 8-29). The fuel heater receives power through the GAGES fuse when the ignition switch…

The fast idle/cold advance circuit has the components shown in Figure 8-28. When the ignition switch is in the CRANK or RUN position, power through…

The electrical circuit for the fuel shut-off solenoid in the injection pump involves the ignition switch as the only control (refer to Figure 8-27). A…

The electrical circuit for the lift pump involves several main components (refer to Figure 8-25): • The oil pressure switch/sending unit (threaded into a lubrication…

Note: Follow this procedure to diagnose the conditions of excessive white smoke and/or poor idle quality after starting. 1. Begin the test with the engine…

Note: Follow this procedure if the engine does not start cold, with or without GLOW PLUGS lamp operation. 1. Check the following items: • Fuel…

Note: Never install a jumper wire between the terminal studs of the controller/relay, since immediate damage to all glow plugs may result. PRIMARY CHECKS 1.…

The glow plug system has the following parts (refer to Figure 8-12): • Eight glow plugs • An electronic controller/relay assembly • A GLOW PLUGS…

The charging system has the the following parts (refer to Figures 8-10 and 8-11): • The ignition switch and wiring • A generator assembly, with…