Water in fuel

[RidetheLightning]

The correct sequence AND mandatory requirements when performing R&R on these pumps, has been beaten to death on here. Then again, very few listen or comprehend the intricacies and proper replacement procedures.

SuperLube....SilGlide...Parker Coating....generic silicone O-ring lube

ALL O-rings MUST receive a light coating. This includes:
Regulator base O-ring
Regulator pintel O-ring
Pump housing O-ring X2
Drain plug O-ring
Pump pressure outlet O-ring X2
High pressure filter bushing X2

Note for others: The 2 pressure outlet O-rings are identical to the drain plug O-ring. Replace ALL THREE as well as the pair of HOUSING O-rings anytime you remove these pumps.

But that takes time and I wanna riiiiiide! J/k, thanks for the reminder. I made sure to do all that back when I rebuilt he pump, but got a little hasty these last couple times and paid for it.

[RidetheLightning]

fuel pressure @ 50 psi, bike starts/idles smoothly. check ALL your o-rings...

[34nineteen]

fuel pressure @ 50 psi, bike starts/idles smoothly. check ALL your o-rings...

So, this begs the question... was the old regulator really faulty?

[RidetheLightning]

So, this begs the question... was the old regulator really faulty?

I believe so. It was running well and tested at exactly 40 psi. When I installed the new one I think it went in at a bit of an angle and pinched the o-ring, causing it to break when I seated it all the way down. It's worth noting I never had performance issues with the old regulator (I don't ride very hard), I just replaced with the new one since I already had the bike up to replace the fan.

[Cooter]

Your bike would initially run lean (Psi x dwell) but the ECM has enough range to compensate for most of the map. The higher load/RPM range, anywhere the maps near the 255 max, could still suffer when you need it most! Glad you checked to find out and fixed it.