I believe one of my tank vent lines is blocked or somehow restricted. If so, it's probably what has been causing the high pitched chirping (subject of another current thread),
I have tried blowing through a hose attached to the vent pipes protruding from underneath my tank. The rear one lets some air in but the forwardmost pipe is blocked.
Anyone have any ideas on unblocking it?
I already tried #12 gauge copper wire; it'll only go in about two inches before it must hit a sharp bend or something.
I'm going to try blowing some air in with my HVLP turbine to see if that makes any difference (probably not but it's the only other idea I have at the moment.