Andrew Posted June 2, 2022 Report Share Posted June 2, 2022 Hello as my voluntary MOT is due my windscreen washer have decided to stop working. The fault is the one way valve on the pipe in the bottle. This is not an electric pump but the old fashioned pump it yourself. Can the one way valve stop working and if so is they an easy remedy or do I just buy a new one as it won’t break the bank regards Andrew Link to comment Share on other sites More sharing options...
Colin Lindsay Posted June 2, 2022 Report Share Posted June 2, 2022 Yes, it can stop working! The bellows inside the pump switch has no valve, it just pumps through both connections simultaneously, so it's the valve that makes the water flow in one direction. Valves are easy to get; your local aquarium shop may have some but otherwise they're used on a lot of cars from the same era. Your old one may just be stuck so take it out of the washer bottle and try blowing through it in the direction of the water flow, maybe a light clean with a toothbrush will get it working again. https://www.ebay.co.uk/itm/352419421443?hash=item520dd59d03:g:t80AAOSwA5tbfYKX 1 Link to comment Share on other sites More sharing options...
Chris A Posted June 2, 2022 Report Share Posted June 2, 2022 Had the same problem myself. I bought this from a site for Minis. I like to keep the car as original as possible, who knows who will look inside the washer bottle when the car is at a show 😁 Link to comment Share on other sites More sharing options...
Josef Posted June 2, 2022 Report Share Posted June 2, 2022 I used a fish tank one on the Spitfire as it was extremely cheap compared with the original style Link to comment Share on other sites More sharing options...
Chris A Posted June 2, 2022 Report Share Posted June 2, 2022 43 minutes ago, Josef said: I used a fish tank one on the Spitfire as it was extremely cheap compared with the original style I did 'splash' out and spend a couple of euros, but originality is king 😁 1 Link to comment Share on other sites More sharing options...
DanMi Posted June 3, 2022 Report Share Posted June 3, 2022 there will be a valve both sides of the pump bellows, the one in the washer bottle plus one either built into the pump or the washer jets, I put an inline one between the pump and the T piece to the jets as well to get nine working. Link to comment Share on other sites More sharing options...
Andrew Posted June 3, 2022 Author Report Share Posted June 3, 2022 Thanks all cannot get it working so ordered two just is case from rimmers. Interestingly they only sell valves for MG let’s see if it fits Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 4, 2022 Report Share Posted June 4, 2022 the long jet holder on herald /vit has a ball one way valve built in often with agism they dont work so the fitting of an inline valve after the pump makes good sense Pete Link to comment Share on other sites More sharing options...
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