Hi all, odd title, I know. Sorry. I have recently done the swap from Mk3 three way/four way windscreen nozzles (which were toilet) to the Mk2 fan spray nozzles (much better). I've also noted recently that my headlight washers now cease to function. I'm wondering if anyone who has extensive knowledge of the car can maybe confirm if the headlight washers require a specific pressure to operate, or are they motor driven for both the actuation and spray. Clearly there will likely be higher back pressure in a system with little holes in the washers than the large scale squirtage of the fans, so is this likely to cause the headlight washers to not operate at all, or is this just some sort of freaky coincidence? Before anyone asks, yes, I've checked the fuse (well, I haven't physically, but it's on the same circuit of protection as the bootlid and windscreen washers) and the lights were on and it was the first squirt, not the 8th yada yada yada.

Cheers.

They are activated by pressure I believe, so maybe the valve has failed