I have a 350 gph doinator fuel pump Im running on my duster with a 512 it was new when I installed it a few weeks ago pump has a problem blowing fuses.Im running a relay with a short run of 10 gauge wire and it eats 30 amp fuses.Tried to run pump today popped fuse instantly.Decided to try and figure out problem removed pump and completely dissassembled every thing looks good no sign of scuffing on pump rotor or houseing and motor alone runs fine reinstalled pump into houseing will not run even hooked directly to battery any body else have problems with these pumps maybe now I know why they dont make them anymore.Any insight would be greatly appreciated Im hopeing to not have to buy a new pump but Im thinking its inevitable. Dan

do you have access to a Ohm meter? you need to check the resistance across the 2 wires & to the body of the pump.

if it is new, just send it back & tell them u want another a pump. should still be under warranty.

Update: found that pump bound when cover was tightened lapped phenolic thrust plate down to leval of aluminum cover seems to work well now and even souds better.

I have the 525 pump, 6 years old been back once for a freshen just for safety.( runs my nitrous system too) I have not had a problem with mine ever.