[Joshinator99]

Originally Posted by calypso50kid

Was on the dyno this past weekend working on some pulley changes, noticed on the first pull that it started to go lean around 5900 so we luckily saw it and ended the pull early. Car is setup running full e85 currently and has been running like this for about 2 years now. Fuel pressure at 5900 was 63 psi and then by 6100 has fallen to 44 psi. Power at 5900 had just surpassed 975 wheel hp and should have continued to climb but it did not.

I emailed Fore and havent heard back from them yet. Has anyone ran one of their triple pump systems and had a pump failure? Id love to diag if one of the pumps is dead or going out before I decide to drop the tank.

Was considering taking the power and ground wires out of hte FC3 controller and turning the car to the on postion and then applying power from the battery directly to each pump one at a time while logging and seeing if the fuel pressure was close across all 3 or if i had one that was not working at all.

Would love to know if anyone else had tried to trouble shoot one of these systems and if so what things I can attmept. I may just end up dropping the tank regardless.

My Fore Triple is about 4 years old, no problems so far.

I think you’re on the right track. I’d guess pump #2 or #3 is dead so you just have to feed the controller power to each of those pumps, one at a time. Should be able to tell quickly if one is dead.

Either that or your fuel filter is clogged up or something like that. Something that is choking flow at high volumes but let’s enough through to let your drive around normally. But I’d bet more on a pump dying.