Yesterday I decided iwould remove the cooling for the manifold and block up the egr valve. I followed the pipe down to the pump and as I couldn't remove it i cut off the pipe. I started the car and it was running badly, making a sort of mechanical knocking sound from somewhere. I thought it might be the pump so In disconnected the electrics from it and I can still hear the noise. Does anyone have any ideas????
Thanks in advance.
Thanks in advance.
