Washer bottle pressurising hose????

I need to pressurise my washer bottle to see if the whole system works. The pressurising hose is missing so I need a replacement, anyone know where I could get one? Or is there anything else I can use?

If I understand correctly there is some sort of valve in the steering column. Don’t know if my washer system valve works but if I could pressurise the washer bottle then I could test it.

If after pressurising the system I find that it’s goosed I will fit an electric washer pump and push switch.

Any advice on washer systems would be really appreciated.



fit an electric pump switch anyway the pressure bottle system is unreliable, slow and often leaves you with a flat tyre and you only find out when you have a puncture. it is meant to stop taking air from the tyre at a certain pressure but with age often malfunctions. You couls borrow my valve if you like to test yours but i’m down in Peebles
Best source of washer bottles with built in pumps is at your nearest scrap yard. VW Polo ones are long and this and have large capacity, but most will do have a good look around at several models. You can buy an inline pump and use the existing pressure bottle with a bit of thinking

Thanks Simon,

I don’t think my washer bottle pressurises via the spare tyre, I guess you just pump it up?

I think it’s more than likely that I will fit an electric pump eventually. Inline pump using the existing washer bottle was what I’d had in mind.

My curiosity is getting the better of me though and I’m intrested to see how this thing works.



Working now, used an old tyre valve. The bottle seems to be holding pressure, well overnight at least. Have bicycle pump, will see how it goes before deciding to fit an electric pump. I expect the novelty will soon wear off!

I’m sure this was covered before on this board but I can’t seem to find it.
I eventually went down the electric pump route:

Get a pump.
Pull the two small rubber hoses off the steering column stalk assembly and attach them to your pump.
Mount the pump somewhere suitable.
Buy a switch and some wire and connect them to the pump. I used the +12V from the back of my temperature guage.

Potentially my temperature guage is incorrect when I am washing the windscreen - “am I boverred?!”.
If at a future date you want to revert to the original set-up, no problem as long as you didn’t shorten the hoses.
Take care as to where you mount the pump, as they can be noisy little buggers if you attach them direct to a panel. Mine sounds like gattling gun.

Thanks for the advice Alan, where did you mount your pump? I was thinking it may have to be mounted quite low down so that it wasn’t sucking against too much of a negative head.

I’ve the same method as Alan suggests and mine is under the dash, it runs for a second or two before water hits screen but always works. And as he says fit it to something solid. My one sounds like a model airplane on full chat :smiley:

I put together the following for the KVDK site. Hope it helps.

Fitting an electric windscreen washer pump.

What you need

  1. The pump. 12 volt windscreen washer pumps can be bought from your local motor factors or places like Just Kampers.
  2. Around 1 metre of 4.6mm hose (check your pump nozzle size, though 4.6mm tends to be the standard) You may not need any if you existing hose is in good nick.
  3. 12 volt Switch - one that only operates if you hold it on. Could be a push in switch or a toggle switch. It’s up to you.
  4. Bit of wire, an inline fuse (5amp should do it) and connectors for the switch and pump 12 volt connections.
  5. One way valve. This isn’t a necesity. It really depends on where you mount the pump.

How to do it

  1. If you look up near the base of the steering wheel where it joins the dash you’ll see 2 black rubber hoses. One goes to the jets and the other to the bottle. Cut these here. The jet hose will connect to the outlet on the pump and the bottle hose to the inlet on the pump.
  2. Remove the kick plate behind the pedals to gain access to the bottle.
  3. Find a place to mount your pump. Remember though that the higher you mount the pump the harder it has to work to suck the water through an empty pipe. You could end up in the situation where you need to put in a one way valve to prevent the water from flowing back into the bottle because it hasn’t got enough oomph to suck it up far enough.
  4. Drill a couple of small holes using to pump mounting holes as a guide and fix the pump in place with a couple of small self tappers.
  5. Make up your positive and negative power leads. One to go from the negative terminal on the pump to earth (you’ll find an earth point nearby). One from the positive terminal on the pump to the switch. One from the switch to the inline fuse and from the fuse to a positive power source. It might be a bit difficult finding a power source especially if you don’t have a Multimeter. If you’ve got a radio in your van then you’ll have a power source you can tap off there. There are a number of different ways you could attach your new lead to the power source. One of the easiest is a snap on connector which wraps around the live wire and punctures the insulation providing the power to your new spur.
  6. Mount the switch somewhere convienient. You’ll probably need a big drill so the switch mounts neatly.
  7. Time to hook it all up. Connect the negative wire to earth and the pump (you won’t know which terminal on the pump to connect it to. Just choose one for now. It won’t break the pump just make it run in the oppisite direction).
  8. Connect the Pumps live teminal to one of the switch terminals.
  9. Connect the other switch terminal to the live power feed (with the fuse in between).
  10. Connect the pipe from the jets to the outlet of the pump.
  11. Connect the pipe from the bottle to the inlet of the pump.
  12. Press the button or flick the switch and you should now have a clean windscreen.


  • It seems to be pumping the wrong way. Swap the wires over on the pump and try again.

  • It seems to be sucking but the water isn’t making it up to the pump. You’ll need to put a one way valve into the pipe between the bottle and the pump. If your pipe is clear then make a note where the water is making it to and put the valve in just under that mark. Make sure you put the valve in the right way. Try blowing through the valve first to establish the direction it works in. When you put it inline you want to prevent the water from flowing back into the bottle.

  • I’ve fitted the valve but it still isn’t making it up to the valve. You’ll need to prime the hose then. If the old pump valve is in place then attach a pump and pump the water up to the valve height (make sure the caps are all on tight on the bottle). If the valve is knackered then disconnect the pipe from the pump and suck the water up with your mouth until it is above the valve. Be carefull though Screen wash doesn’t taste nice!