Maintenance 105 Bleeding the Fuel System DANGER Before working on or inspecting a vehicle, set the parking brakes, place the transmission in neutral and block the wheels. Failure to do so can result in unexpected vehicle movement and can cause serious personal injury or death. The fuel system will need to be bled if: The tank has been emptied of fuel. The engine has not been running for some time. (See also page 34 for oil pressure preparation). Service work has been done on the fuel system, for example cleaning or replacing fuel filter elements. The engine is new or rebuilt. Note: It is very important to maintain high cleanliness when working in the fuel system.
If dirt is mixed in with the fuel after it is filtered, it will cause damage to the injectors. Dirt can also cause air leakages that rob the engine of power.