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My quincy 325 isn't unloading properly. I replaced the hydraulic unloader which didn't help. After the unit builds pressure to 180 psi and shuts off, all I am getting is a slight escape of air thru the air filter but not the usual "whoosh" that it used to do. So it takes a long time until the...

I have an older Quincy 325 that stopped building pressure. With the compressor running and my hand over the input (where air filter attaches) I feel a rapid pulse/suction/pulse etc. which seems to be about as fast as the unit is running. So I carefully rebuilt the two intake valves and no...

Can anyone give advice on fixing my sick Quincy 325? I rebuilt it a few years ago and it has been working great. But lately the unloader function has become very slow...instead of a sudden rush of air it was just a very slow leak that took a while to unload to where the flywheel would turn...

Does anyone have experience with vintage air compressors? I have a Quincy 325 that I rebuilt and it works great....but lately I've noticed that after it shuts off and unloads (has two automatic unloaders) I can hear and feel air leaking out of the fitting where the air cleaner screws on...and...