Although the injection pump has capabilities to pull fuel from the tank, an engine mounted fuel pump is included in this system as an additional…

1. Drain fuel tank and fill with diesel fuel. 2. Remove fuel line between fuel filter and injection pump. 3. Connect a short pipe and…

1. Drain the fuel tank. 2. Remove the tank gage unit. 3. Thoroughly clean the fuel tank. If the tank is rusted internally, it should…

In warm or humid weather, fungi and/or bacteria may form in diesel fuel if there is water in the fuel. Fungi or bacteria can cause…

Various malfunctions in diesel engines often lead to injection pump replacement. Before replacing the injection pump, determine if water or an excessive amount of gasoline…

The 1982-83 units used a tank unit mounted water in fuel (W.I.F.) warning-system. It will detect the presence of water when it reaches the 1-2…

See Figure 4-4. The fuel pick up, commonly known as the “ sock” has three functions: 1. Strain out large solids. 2. Act as a…

Diesel fuel is sensitive to temperature. All diesel fuel has a certain amount of heavy paraffin-like components, which are high in energy value and help…

General Motors Corporation recommends that owners of 1985 and subsequent Model Year diesel engine vehicles use Number 2-D diesel fuel above 20°F (-7°C) ambient temperature.…

A fuel return system routes excess fuel from the injection pump and leak-off type nozzles.