I am not getting fuel to te engine for starting. Where is the fuel filter? Where is the fuel pump?
The fuel pump is located in the tank. The fuel filter may be along the frame, in the tank, or up front towards the engine. Do you hear a buzzing or whirring near the fuel tank for about 10-15 seconds when turning the key? This is the fuel pump pressurizing the system. If you don't hear this, suspect a fuel pump or fuel pump relay.
The fuel filter is along the frame under the motorhome usually on the drivers side.