Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Thread Tools Display Modes
Old 06-17-2021, 08:54 PM   #1
Senior Member
Join Date: Mar 2017
Posts: 220
Dx3 water pump prime

I pumped the water tank to empty to get rid of some bad water. Since then I have not been able to get the pump to reprime. I have pressurized the water system with the hose and then turned off the water and the pump just won't prime. Any ideas here?

mikew968 is offline   Reply With Quote
Old 06-18-2021, 06:14 AM   #2
Senior Member
SeaDog's Avatar
Join Date: Jan 2016
Location: Idaho
Posts: 9,443
Once you pressurized the system with the hose and made sure there was water in the tank did you realize the pressure in the system by opening a faucet to get the pump to start?
Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
SeaDog is offline   Reply With Quote
Old 06-20-2021, 09:26 AM   #3
Senior Member
Desert Boat's Avatar
Join Date: Jan 2021
Location: Fort Mill SC
Posts: 156
Seems the pump primes better with no back pressure - have the faucet closest to the pump fully open when you try to prime.
2021 Isata 5 28ss 4x2 / 2020 JLU Rubicon
Prior: 2016 Lance 1995 / Ram 1500 Eco Diesel
2012 Lance 1575 / 2015 Jeep JKU Rubicon
Desert Boat is offline   Reply With Quote
Old 06-20-2021, 10:07 AM   #4
Senior Member
D W's Avatar
Join Date: Sep 2016
Location: ALASKA (World's Biggest Campground)
Posts: 3,632
It is entirely possible that the water pressure from the hose has forced the water pump into "by-pass" mode. The pump will not come out of by-pass mode until the residual pressure from the CW line is relieved.
'07 K3500 Silverado LT Crew Duramax (LBZ)
2016 Salem 27RKSS
1984 CHEV SCOTTSDALE K20 2GCGK24J0E1XXXXXX (Chevrolet Legends-Class of 2019)
"...exhaust fluid? We don't need no stinkin' exhaust fluid"
D W is offline   Reply With Quote
Old 06-27-2021, 04:02 PM   #5
Senior Member
Join Date: Mar 2017
Posts: 220
I wanted to share the outcome. There is a screen filter right before the water pump. It was so gunky very little water was getting through. I cleaned it and all is good...except the gunky freshwater tank!!!
mikew968 is offline   Reply With Quote
Old 06-27-2021, 04:33 PM   #6
Senior Member
Delco Bobby's Avatar
Join Date: Aug 2015
Location: Media, PA
Posts: 2,740
What about your fresh water tank drain?

Maybe try running water into the tank with the drain line open to flush out the bad stuff, then sanitize.
2017 Dynamax REV 24RB
2018 Ford F-150

Formerly a 2013 Sunseeker 2250 SLEC.
Delco Bobby is offline   Reply With Quote

dx3, pump, water, water pump

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.

All times are GMT -5. The time now is 04:38 AM.