I have a Mallory Comp 140 fuel pump with only a few hours on it. The pump is a georotor design. Yesterday it blew a fuse and left me stranded. $100 tow later I pull the pump apart and find some rust particles in the inlet screen and in the rotor portion of the pump. I clean everything out, but to get the pump to run again without popping the fuse I needed to flip over this plastic part that the rotor slides on. It was scored from the rust particles.

I had an inlet filter, but it was some cheap Mr Gasket POS. I tried back flushing it and didn't get any junk out. Almost as if they forgot to put the filter material in it.

My question to any one who has this type of pump, is this sort of thing common and do you think I ruined the pump? I learned the pump is very easy to take apart, I can do it while on the car, so I am wondering if this is considered standard practice? I don't want to run the pump again until I get a better quality filter on it (and clean the carb).

Also are these pumps typically loud? Or was mine just loud because of the grit?

Thanks for any advice.

By the way, tow truck drivers seem to love my LS2 powered Datsun. This guy even took a picture to show his boss. Hope I don't meet many more of them.