[jonmachota78]

Originally Posted by jonmachota78

My hp150 is noisy as heck! Not quite as bad as my old holley blue, but still pretty loud.. i must just be lucky i guess. i even sent it back to holley, they inspected and tested it and said its OK and sent it back. It performs great and has been reliable though... just not quiet.

I just want to provide an update since i was crying about my noisy hp150. The other night i disassembled it to see what i could find and inspect the gerotor mechanism. Everything looked ok, the gerotor did show some wear but nothing major. There is an internal screen filter, looked clean but i could hardly blow through it. Blasted it with carb cleaner and then i could blow through it with ease. I've always run a quality 80 micron prefilter so im not sure what clogged the internal screen filter... varnish or something not visible? Anyhoo got it all back together and it is nice and quiet now. What a relief after having a loud pump for like two years. Im probably lucky it didn't burn up. Funny thing is it was noisy the day i got it back from Holley! Cant wait for spring and if y'all gots a noisy holley HP pump, check the internal filter! Fyi jon