I have an 02 Roadking FLHRI. Friday night my oil light cam on and will not go off. The motor seemed to be running fine and still starts and idls well. I have changed the oil sending unit with no luck. I decided to pull the oil filter to see if the motor would spray oil while running. Not a drop came out. Does the oil filter need to be on the bike causing vacume for oil to flow properly or should it spray out of the oil filter like I thought it would.