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Mystery Pump

Discussion in 'Engines' started by SplashFl, Nov 29, 2024.

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  1. SplashFl, Nov 29, 2024
    #1
    SplashFl

    SplashFl Senior Member

    Joined:
    Feb 2, 2021
    Messages:
    538
    Location:
    S. Florida _ Bertram 46
    Been bugging me for awhile. Small old pump near one of the Racor filters appears to be fed from one of the fuel tanks. On its output side has about a 3 ft. capped fuel line that just hangs there. Below is a momentary switch that when turned on causes the pump to make a clicking sound. Anyone care to guess what the pump is for ? I'm thinking maybe just to top off diesel when changing a filter.
  2. Capt Ralph, Nov 29, 2024
    #2
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,498
    Location:
    Satsuma, FL
    Your on it. The clicking sound is the pump trying to run but dead-heading into the capped out line.
    A little disposable in-line fuel filter rite before the pump and have a shut of valve at the tank outlet would be good to have there also.

    You could get froggy and plumb it in before the Racors and have a total fuel priming system.
  3. Pascal, Nov 29, 2024
    #3
    Pascal

    Pascal Senior Member

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    Feb 29, 2008
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    8,570
    Location:
    Miami, FL
    Priming pump. Comes in handy when changing filters. I had a similar setup before i decided to plumb permanently with valves.
  4. SplashFl, Nov 29, 2024
    #4
    SplashFl

    SplashFl Senior Member

    Joined:
    Feb 2, 2021
    Messages:
    538
    Location:
    S. Florida _ Bertram 46
    Thanks guys. Another mystery solved. :)