The 6.2L diesel engine uses the Stanadyne DB2, distributor-type, fuel injection pump (Figure 4-31). The function of the fuel injection pump is to meter the fuel according to engine power requirements and to inject it at high pressure through nozzles into the combustion chambers of the engine at the correct timing intervals. The metering calls… Read More »
• Injection distributor pump. • High pressure lines. • Fuel injection nozzles. The 6.2 liter injection pump is mounted on top of the engine under the intake manifold. It is gear driven by 2 gears — one attached to the front end of the camshaft which drives the second gear that is attached to the… Read More »
When a problem is indicated by the “WATER IN FUEL” signal light, first follow the diagnostic procedure outlined in the vehicle sen/ice manual. If this procedure fails to locate the problem and the light continues to stay on, the fault may be in the fuel filter/water separator assembly electrical sensors. To determine which sensor may… Read More »
Leakage of fuel and/or air past the drain and/or vent seal(s) can occur in the base of a Model 80 fuel filter. The two Model 80 assemblies involved are part numbers 14071933 and 14071064. The specific symptoms of this leakage are: 1. External fuel leakage from the vent or drain plugs. 2. A hard starting… Read More »
The fuel filter is easily removed and installed with the use of a screwdriver. To prevent fuel spillage — drain fuel from the filter by opening both the air bleed and water drain valve allowing fuel to drain out — into an appropriate container. To remove the filter: 1. Remove fuel tank cap. This releases… Read More »
Care should be taken not to run out of fuel; however, if the engine stalls and you suspect fuel exhaustion the following procedure will facilitate restarting. First, determine if engine stall is due to fuel exhaustion. Open the filter air bleed valve — if air is present then the vehicle is probably out of fuel.… Read More »
An authorized dealer can remove (purge) water from the fuel tank. However, you can purge the fuel tank by using the following procedure. TO PURGE THE FUEL TANK: 1. Park vehicle in a level position. The fuel pick up is in the approximate center of the tank. 2. Place a large container under the filter… Read More »
The diesel equipped truck has a multifunction filter for solid contaminants and water. The filter is mounted on the front of the dash. To drain water: 1. Remove the vehicle fuel tank cap. 2. Place a container below the filter drain hose located below the filter. 3. With the engine off open water drain valve… Read More »
During refueling, it is possible for water to be pumped into your fuel tank along with the diesel fuel. Your vehicle has a water separation system in the fuel filter. It also has a “WATER IN FUEL” light in the instrument cluster which is designed to come on if water has accumulated in the fuel… Read More »
The Model 80 is cowl mounted on the C-K. See Figure 4-23. It is mounted at the rear of the intake manifold on a G or P Truck. Also because of space the G & P will use a belt driven vacuum pump. See Figure 4-24.