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I dont think my water pump is priming?

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    I dont think my water pump is priming?

    I have a 1988 2655 cierra that I just replaced the cabin water pump on and I don't think its priming. The water tank is full and when I turn on the water switch in the cabin I just hear the pump running but no water comes out in the faucets. What am I missing?

    #2
    If you just replaced it, I would look for leaks at the connections to the pump. If it is sucking air, it will happily do that rather than have to work and pull water. Also, if you closed a valve between the tank and pump to change the pump, make sure you opened it.
    Justin
    1984 2150 Ciera "C-ya"
    AQ225D w/ 280
    MMSI 338355691
    St. Joseph, Michigan

    Comment


      #3
      only 4 things can cause this.... an empty tank, a valve between the pump and the tank is closed, or you have a suction leak somewhere, or its a faulty pump.... but in almost every case when this happens, its a suction leak and the pump is sucking air, which takes much less effort to suck than water.. double check all the fittings.,


      NU LIBERTE'
      Salem, OR

      1989 Bayliner 2556 Convertible
      5.7 OMC Cobra - 15.5x11 prop
      N2K equipped throughout..
      2014 Ram 3500 crew cab, 6.7 Cummins
      2007 M-3705 SLC weekend warrior, 5th wheel
      '04 Polaris Sportsman 700 -- '05 Polaris Sportsman 500 HO
      Heavy Equipment Repair and Specialty Welding

      Comment


        #4
        I didnt close a valve but I do recall no water came out when I took the old pump off even tho the tank was full. So that makes me think something is closed off but I dont know where it would be?

        Comment


        • Centerline2
          Centerline2 commented
          Editing a comment
          is it a top draw tank or a bottom draw tank?.... a top draw may not allow water to flow out, but a bottom draw would... check for a pinched/bent hose, which is effectively the same as a closed valve.

          top draw or bottom draw, you should be able to blow air into the hose going into the tank from the pump, and hear the air bubbles in the tank... this indicates no restrictions, but does not indicate that there is not an air leak at a fitting.... even the fittings that you didnt mess with need to be checked...

          also check and make sure the treaded seat connection to the pump doesnt have a piece of debris in it, and not allowing it to seat fully/properly...

        #5
        check that drain valve is closed on water heater.

        Comment


          #6
          If the water tank is lower than the pump you’ll see no water exit the line when you disconnect the pump
          Dave
          Edmonds, WA
          "THE FIX"
          '93 2556
          Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

          The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
          Misc. projects thread
          https://www.baylinerownersclub.org/f...56-gctid789773

          Comment


            #7
            Ensure the vent line for the water tank is clear. Also, if the entire system was empty it’ll take a couple minutes (possibly more) to bleed the air from the lines and much longer on the hot side if the water heater was empty.
            Dave
            Edmonds, WA
            "THE FIX"
            '93 2556
            Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

            The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
            Misc. projects thread
            https://www.baylinerownersclub.org/f...56-gctid789773

            Comment


              #8
              Is there a water tank drain valve that could be open that I cant find? My aft bilge just kicked on and emptied a lot of water so either that or its leaking very fast. I can watch the water level drop looking in the hole when I fill it? I also cant see the holding tank to inspect anything.

              Comment


                #9
                Holding tank- waste discharged from the head.
                Potable water tank- fresh water use.
                I’m not familiar with your model but most of these potable water tanks do not have a drain fitting as they are typically installed deep in the hull of the boat and may only have access to the water line connections.
                It sounds like you’ve discovered your potable tank is leaking fresh water into the bilge. You’ve got a decent leak that you’ll need to locate. There should be a way to access those connections at the tank. Was the tank emptied prior to winter lay up? If not, any water left in the tank or in the lines can freeze causing the tank or lines to split. The tank can usually handle a bit of water freezing within it, the water lines not so much. Hopefully you’ll find it’s just a loose or split fitting or line.
                Dave
                Edmonds, WA
                "THE FIX"
                '93 2556
                Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

                The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
                Misc. projects thread
                https://www.baylinerownersclub.org/f...56-gctid789773

                Comment


                  #10
                  I bought the boat just this spring. The head had pink antifreeze in it but i cant say for sure what was done with the fresh water holding tank.

                  Comment


                    #11
                    As mentioned, you likely have a air leak somewhere. On mine, which was hard to find, the clear filter before the pump had a tiny crack, enough to keep the pump from pushing water into the boat.
                    An easy fix, and easy to check. Take it off, and blow through it with a finger over the other end.
                    Tally and Vicki
                    "Wickus" Meridian 341
                    MMSI 338014939

                    Comment


                      #12
                      My filter was cracked as well and I bought a new one. Unfortunately I think its a bigger issue. I just cant figure out how to get a look at the water tank? Does anyone know how to inspect it in an 88 cierra 2655? I dont even know where it is? I just know its forward of the engine bulkhead.

                      Comment


                        #13
                        Try here:
                        https://www.baylinerownersclub.org/f...ed-gctid772528
                        Dave
                        Edmonds, WA
                        "THE FIX"
                        '93 2556
                        Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

                        The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
                        Misc. projects thread
                        https://www.baylinerownersclub.org/f...56-gctid789773

                        Comment


                        • Seahawk II
                          Seahawk II commented
                          Editing a comment
                          Nice work Dave!

                        #14
                        I'll suggest what I think is a stupid suggestion but who knows. Perhaps the water connections are reversed and its trying to pump water into the tank instead of out of it?
                        Tony Bacon,
                        Washougal, WA
                        Caspian, MMSI 338355743
                        1997 3788 Cummins 250hp

                        Comment


                          #15
                          Thanks everyone! It was a simple disconnected fitting.

                          Comment


                          • builderdude
                            builderdude commented
                            Editing a comment
                            Good deal, a simple fix👍🏼
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