can't get water pump to pump antifreeze

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JIGGS

Well-known member
Joined
Feb 22, 2006
Posts
255
Location
new castle pa.
Today i winterized my HM . When i tried to prime the pump with antifreeze it wouldn't pull from the bottle.  So i took a cap and drilled a hole for a fitting to fit the clear hose. I turned the gal. bottle of af. upside down and put a hole in the bottom and feed the pump like you would an animal. I did get the job done. My question is why didn't the pump prime ?  The pump has good pressure when i use it while campping. I do have to shut it off manually . If not it will run non stop. It says to tap the head of the pump to unstuck the switch . did not work. I have let it run for a while to see if it would shut off and did not shut off. The pressure that built up in the lines was pretty high.
Any ideas good or bad is welcome
 

John From Detroit

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Joined
Apr 12, 2005
Posts
25,122
Location
Davison Michigan
Usually, if a pump fails to prime, it is because it's sucking air. You have a bad seal somewhere and/or you failed to block off the fresh water hose.  It's that simple.

My lines are full of bleach water just now with aux heat in the rig.  I'm hitting the road in 3 weeks give or take a couple of days, Need to flush and refill a couple of times before that happens
 

Gary RV_Wizard

Site Team
Joined
Feb 2, 2005
Posts
74,421
Location
At our Silver Springs FL home
Today i winterized my HM . When i tried to prime the pump with antifreeze it wouldn't pull from the bottle.

First question is, "What brand of Rv and what type of water system?".  Does your Rv have a direct external inlet to the pump? Many do not.  If you were trying to feed it via the normal fresh water hose connection, that is usually not a pumped inlet. Plus, there is a check valve in the inlet and you need external water pressure to push the check valve open.  You may need an external pump to make the job easier - a hand pump or small electric pump (e.g. a boat bilge pump).

So tell us a bit more about your set-up and perhaps we can make some suggestions.
 

JIGGS

Well-known member
Joined
Feb 22, 2006
Posts
255
Location
new castle pa.
What I can tell you is I took the filter off  the inlet side of the pump .Put the clear hose with the hook up for the antifreeze on the pump. Stuck the other end in the gallon bottle and tried to prime the pump.  I am sitting here typing this and it seems to me that once i feed the pump and got it primed there was a small leak. Which as john said would be sucking air when trying  to catch prime. The leak was coming from the fitting on the clear hose
If you can think of any thing else please say so.
 
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