In line electric fuel pump issues
04-03-2008, 12:01 PM
#1
In line electric fuel pump issues Hey guys, I have a quick question. I bought a 140gph "black" pump w/reg. from ebay. It's a ProComp pump which could be a problem but I was trying to save a few buck over a Holley blue which I may end up having to get anyway.
O.k. I have bought one of the Jeg's wiring harness with relay kits but I'm yet to install it. Right now it's just hooked into a ign under the dash in the fuse box. The problem is after the truck runs for 20-25 minutes the pump starts to fluctuate, it's wierd really, and the other day it dropped to like 3lbs and pretty much quit. I can turn everything off and let it sit for a while, fire it back up and all is well. It almost seems as if there is too much pressure build up that cant be released when it's just idling, so far the trips that I've driven it up and down the road seem to be fine.
The regulator is also one of the Holley type knock offs with 3 3/8 npt ports, one in the bottom bringing fuel in and one on each side. Do any of you guys try to bushing down one side to a 5/16 and run it to a return to try and relieve some psi, will this work or with a return will the pump not be able to keep up?
Also, could the problem be that the way I have it wired now be causing a voltage fluctuation. I'm gonna try to get the relay kit wired up by the weekend but I don't know if it's the remedy for the problem, either way it should be on there.
Sorry for the long post, I was just trying to provide as muh information as possible.
James
O.k. I have bought one of the Jeg's wiring harness with relay kits but I'm yet to install it. Right now it's just hooked into a ign under the dash in the fuse box. The problem is after the truck runs for 20-25 minutes the pump starts to fluctuate, it's wierd really, and the other day it dropped to like 3lbs and pretty much quit. I can turn everything off and let it sit for a while, fire it back up and all is well. It almost seems as if there is too much pressure build up that cant be released when it's just idling, so far the trips that I've driven it up and down the road seem to be fine.
The regulator is also one of the Holley type knock offs with 3 3/8 npt ports, one in the bottom bringing fuel in and one on each side. Do any of you guys try to bushing down one side to a 5/16 and run it to a return to try and relieve some psi, will this work or with a return will the pump not be able to keep up?
Also, could the problem be that the way I have it wired now be causing a voltage fluctuation. I'm gonna try to get the relay kit wired up by the weekend but I don't know if it's the remedy for the problem, either way it should be on there.
Sorry for the long post, I was just trying to provide as muh information as possible.
James
04-03-2008, 01:35 PM
#4