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Re: T&T: 120 Lehman Lift Pump

From: Ken (no email)
Date: Tue Oct 03 2006 - 05:08:35 EDT

  • Next message: Keith: "Re: T&T: 120 Lehman lift pump"

    Greetings,
        Thanks to all that have replied!! For the suggestions of the lift pump
    lever cam. I did check the position as it is mentioned in the original Lehman
    manual.

    SNIP>> I would very much doubt you've done anything to damage the injector
    pump.
    Me either. It's the "lift" pump I belive is bad.

    I agree that an electric pump is in order (how easy this would be!) and had
    already planned on building a polisher. I also agree that the primary filters
    should be replaced with the spin-on replacement.

    There is a short steel line that runs between the discharge side of the lift
    pump, to a "fuel hose" that bypasses the primatry filters. I disconnected the
    hose to see if I could manually pump fuel at least that far, and I cannot. So
    I can't manually pump the fuel even 12 inches above the pump. I am going to
    order another lift pump from Smith's today. I need a spare anyway.
    Thanks,
    Ken

    >What should I see coming out of the lift pump while working the manual
    lever?

      Regarding your bleeding problem, are you sure you're getting the full
    up-stroke on the lift pump? Depending on where the engine stopped you may
    have very little pumping action with the lever. Try giving the engine a quick
    hit with the starter to put the pump lever on a different part of the cam and
    see if you get a full pump stroke. You should get a bit of frothy pink
    bubbles as the air is bled out of the system. When the air is gone you'll
    just get fuel.

      I would very much doubt you've done anything to damage the injector pump.

      C. Marin Faure
      GB36-403 "La Perouse"
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