We are THE friendliest motorhome forum, please register to join in the fun, and have access to all areas.

Introduce yourself

Sign up Latest Topics Donate

  Author   Comment  

Avatar / Picture

Senior Member
Posts: 402
Reply with quote  #1 
I was carrying out pre-flight checks the other day (my van is sorned over winter) and found to my annoyance that the water wouldn't pump up. The pump ran freely but wouldn't self-prime.

I did the usual plumbing checks and then eventually dissected the pump head but couldn't see any obvious issues so took the easy way out and ordered a new one off ebay.

The strange thing is that over the last couple of weeks the Autotrail FB group has been inundated (see what I did there[smile]) with similar issues. The only common factor is that all recent AT's are fitted with similar pumps and all the folks who posted up were using their vans for the first time this season.

I'm now wondering if the cold weather in March was a factor; I had drained down and removed the filter housing but it looks possible for some water to have remained in and around the diaphragm, perhaps ice formed and affected the elasticity? I've never had any issues before so the pump may well be about 10 years old; the other AT's with issues were between 5 and 10 years old; perhaps the Trail Kings have a best-before date!     


Ernie; Mid-Norfolk; Autotrail Apache 632

'One man's junk is another man's treasure'

Avatar / Picture

Executive member
Posts: 2,431
Reply with quote  #2 
Cold weather maybe Ernie.

I had a different problem. I always drain mine down but when repriming the system after the heavy frosts recently my immersible pump wouldn't hold its prime for long. Thought it was ice that had knackered the non return valve in the pump but turned out to be the plastic circlip on the pipe had failed with the cold and snapped, letting water drain back out through the pipe.

I got off lightly I think.



*Embrace The Detours* 

My Greece stopover map

Pudsey Bear

Avatar / Picture

Really should get out more
Posts: 12,355
Reply with quote  #3 
I always pump through all the taps to drain down, odd there should be so many incidents with one pump, I wouldn't fit any other make or type, one of ours ran for 3 months with no water in the tank.
Kev [comp] 

Warning, might contain an opinion [nono]  

If you're not the lead dog, your view never changes.

Don't force it, use a bigger hammer. Semper ubi, Sub ubi. 

Link to self build pictures

Link to sort of blog on facts


2002 Bessacarr E745 Ducato
Previous Topic | Next Topic

Quick Navigation:

Easily create a Forum Website with Website Toolbox.

Go to top of page         Return to forum home page