I have an aeromotive afpr, with a liquid filled gauge. and the gauge does not work. obviously its getting fp because it runs and drives fine. last night i pulled the gauge out and noticed there was like a cap inside the threaded portion of the gauge itself. i removed the cap hoping that my problems would be solved but low and behold STILL no Pressure reading. is it possible that a mechanical gauge could quit working, as i am under the impression this gauge WAS new. but as we all know was and is are different things entirely,, any input? im going to try to source another gauge in the mean time