water pump help (fresh water)

[mhsteve]

i have replaced my fresh water pump as it would not pump . new pump pumps water but very slowly . no pressure . need help please .
1997 bounder

[mhsteve]

LOL no expert , just dumb old guy ........... LOL

[xctraveler]

You now know more about your water system than you ever wanted to know:)

Also you get to be the expert next time someone posts a water system problem.

[mhsteve]

thanks

[hughesjm21]

Sounds like your recirc valve used to set pressure is too far open. Not sure what your pump has, but mine has a set screw to set shutoff head and a set screw to set system pressure.

[mhsteve]

operator error ! got water !! i had one valve backwards ... thank you all .. steve

[mhsteve]

really plugged now since i tried to clear them ............

[mhsteve]

no luck again . lines must be pluged . thanks all ... steve

[mhsteve]

path1 ... thank you also .......... steve

[mhsteve]

great help . thank you ... steve

[xctraveler]

If he can shoot water across the street there is adequate flow from the tank to the pump.

If I were going to try air pressure at about 40 psi max, l would apply the pressure to a faucet with the pump disconnected and try to clear it back to the pump rather than driving it further into the system.

I must admit it siounds like a problem I had where a filter disintegrated and blocked up all my inline filters and screens. I even had to replace the T valve under the sink that enables the spray hose. Symptoms are very much the same.

[path1]

mhsteve wrote:
well the pump puts out enough to go across the street ! how do you clear the lines with out hurting them ?? ................ steve

X2 on most advice above. You'll find the problem sooner or later.

Being you can shoot water across the street it sounds more like a volume problem to me, probably because of some type of partial blockage. Finding the blockage is the problem now.

Stopping in at our 1 man RV shop many moons ago, he told me of a weird one that I've thought about reading your post.

Our RV guy, after putting in a new pump, checking valves, etc... He found out that the water from fresh water tank to the water pump was not keeping up fast enough. So in the beginning it looked so obvious that the pump or valve was bad.

(I think I remember his story because of the way he found the problem)He told me he didn't have to remove any hoses to find the problem because the water hoses were the newer sort of translucent colored plastic and with a bright light could see a shadow of the water inside the line because it casted a shadow. When he turned on pump, it sucked the water line dry, then water line slowly filled up again. So the problem was really the incoming water line volume did not keep up with the pump.

Long story short it tuned out the customers kids or somebody tossed something in the water fill hole that plugged up the water line exit hole to water pump.

As far as clearing water lines, be careful and not to much air pressure. I don't go over 35 psi when winterizing. Some people put much more than 35 psi, but my limit is 35.

But if you could see that the water is not keeping up with the pump by casting a shadow on the water line with a light your problem is 1/2 way solved.

Why put any pressure to it? Might just lodge something more.

(More interesting was his way of getting the junk out of water tank.)

OK just my 2 cents, hope it helps, especially if you have the newer water lines.

[mhsteve]

as in correct way up ? yes i have it correct to the flow . my problem is in all faucets ............. is there a safe way to clear the feed line ? .......... steve

[fourmat]

mhsteve wrote:
i changed the fresh water filter under the sink . is there more ? thank you .. steve

do you have element in correctly

[mhsteve]

well the pump puts out enough to go across the street ! how do you clear the lines with out hurting them ?? ................ steve