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solarbri's avatar
solarbri
Explorer
Jun 06, 2019

Help w/ water pumping issue...

So...
This past December, as I prepared my sailboat in Mexico for our annual winter sail, I needed a new water pump. Quickest and easiest fix was to “borrow” the Shurflo pump I had in my OutfitterMfg. truck camper. Perfect fix.
Upon returning to the camper, I installed a new pump. Unfortunately, it didn’t work right. Only pumping a bit of water, but lots of air. Thinking it was a defective pump, I ordered another one once back in the U.S. same deal.
What could have possibly happened to my camper plumbing over the course of a winter parked in Mex. to make this happen. It’s kind of a big job to lower the floor out of the camper just to look around, so I’m asking for any ideas as to why this happened here to the collective.
If it were cracked tubing allowing air into the pump, there would be a leak. There is no leak. I’m pretty damned mechanical, and this mystery has me stumped.
Thanks for any help!
-Waterless Brian
  • wa8yxm wrote:
    On the inlet side of the pump ia (normally) a "Strainer" and it can be opened for cleaning and then misaligned when you close it allowing pump to suck air.


    Thanks. Good thinking, but there is no strainer. No filter. No anti freeze hook up.
    The search continueth...
  • So you can siphon at various places ans get water?

    I've seen inside hose liners peel loose. At various suction vacuum they will plug a pipe or remain open. Same for domestic water inlets beyond the pump. You don't have any kind of pressure limiter after the pump? I've had to disconnect the SUCTION side of a pump and blow air backward into a tank to diagnose a few screw-loose problems. Must hear tank boil with air bubbles. Assume nothing. Test :)
  • Ok. It was a fricken old guy moment.
    After dropping the floor twice, changing the pump 3 times, redoing the plumbing in the basement, it turns out, I wasn’t tightening down the hose from the tank to the pump connection tight enough.
    Where’s the **** headslap emoji. ???????

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