Chrysler Full-Size Vans 1967-1988 Repair Guide

General Information


See Figure 1

Click image to see an enlarged view

Fig. Fig. 1: Diesel injection pump linkage and components

The diesel engine fuel system consists of the fuel tank, fuel line, feed pump, fuel filter, injection pump, injector lines, nozzle holders and nozzles, leak-off lines, and the fuel return line.

Observe caution when working with any diesel fuel system. At specified pressure, fuel can be sprayed through the flesh of a hand or an arm. Diesel fuel injected in this way can enter the blood stream!

The feed pump draws fuel from the tank through the fuel line. It passes through the fuel filter mounted at the back of the intake manifold and enters the injection pump. At the proper intervals, the injection pump forces fuel at high pressure into the injector lines. High-pressure fuel is sprayed into the combustion chambers through the nozzles. Fuel not used during operation is drawn off the leakoff lines and returned to the fuel tank by the fuel return line.