boxcar1511
Member
OK' on our last trip after running our Onan 5500 gen. for a while ( 6 to 8 hours) we started to hear a clicking coming from the gen. a few minutes later it shut down. let it sit for a few hours restarted it ran for 30 minutes shut down again. we finished the weekend on batteries... Got it home ran it till it started making noise put my hand on fuel pump it felt like a grimlin with a ballpen hammer was in side.. First thought was pump might be sucking air , pulled the tank cleaned it ( fairly dirty ) pulled fuel through lines with remote pump ( both directions) line was clear,as was pick/up line in tank. All connections were tight before removing tank..Ok so here is my guestion I feel pretty sure its the pump, the pump fron Onan is around $100.00 , a buddy tells me that I can put any 12 volt low preasure pump on it for half the money and it will work good as new. has anyone done this with any luck.. or does anyone have any knowledge on the specs for the factory pump(psi- gph) so i can narrow down a better replacement than the china c--p onan sells.. As a side note the gen has a filter before and after the pump that i will be replacing with premium inline filters getting rid of those cheap china filters..