What causes air to be trapped in a diesel filter?
What causes air to be trapped in a diesel filter? When you change a diesel fuel filter, run out of fuel or disturb the fuel system, air is trapped. When you try to start the engine this air acts as a lock, preventing the normal supply of fuel. What to do if your diesel fuel line is bleeding air? Here are the steps to take in bleeding air from a diesel fuel system: 1. Turn off fuel valve. 2. Clean outside of filter housing. 3. Install new filter element and new gaskets. A little oil on the gasket will aid...