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Thread: Water in fuel

  1. #21
    Senior Member
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    Apr 2019
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    Phoenix, AZ
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    Quote Originally Posted by Barrett View Post
    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.

  2. #22
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    Apr 2019
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    fuel pressure @ 50 psi, bike starts/idles smoothly. check ALL your o-rings...

  3. #23
    Senior Member 34nineteen's Avatar
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    Mar 2015
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    Quote Originally Posted by RidetheLightning View Post
    fuel pressure @ 50 psi, bike starts/idles smoothly. check ALL your o-rings...
    So, this begs the question... was the old regulator really faulty?

  4. #24
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    Quote Originally Posted by 34nineteen View Post
    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.

  5. #25
    Senior Member Cooter's Avatar
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    Dec 2012
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    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.



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