Audi A4 headlamp washer leak.

[stagnite]

I have a 2014 A4 which has just developed a leaking headlamp washer. Upon removal of the wheel liner and inspection of the jet itself by pulling it out with a cord, I was wondering if there is a one way valve along the fluid line that has got stuck. Any ideas?
The fluid seem to be weeping out of the jets.
Any ideas?

Edited by stagnite on Tuesday 25th September 09:57

[Rich_W]

stagnite said:

I have a 2014 A4 which has just developed a leaking headlamp washer. Upon removal of the wheel liner and inspection of the jet itself by pulling it out with a cord, I was wondering if there is a one way valve along the fluid line that has got stuck. Any ideas?
The fluid seem to be weeping out of the jets.
Any ideas?

It's a common fault on them. New jets aren't terribly expensive. If it was a leaking valve (there isn't one anyway) it would affect both jets obviously not just one

[stagnite]

Not if there is a one way valve in each jet. I am going to to try injecting some cleaning product into the jet. I read that tip after my post.
There must be a valve or the washer bottle would empty out as the jets are lower than the bottle and gravity would pull the fluid out.

[stagnite]

I decided to have a bash at curing the washer leak so removed the wheel and arch liner to get access to the rear of the washer jet. It looked like the washer unit is clipped in to its housing, but for the life of me I couldn't fathom out how to unclip it and I didn't like to force any plastic parts causing it to break, so I worked on it in situ.

Working on the assumption that it contains a sticking one way valve, I removed the fluid feeder pipe and found a fuel line that fitted nice and tightly. I then injected some Viakal (Limescale remover) into the unit and left it for a couple of hours. By looping some cord around the jet, I was able to pull the jet out and release it with ease causing the Viakal to flush around the inside of the unit. After that I refitted the fluid feeder pipe and flushed out the Viakal, rinsing it off the paintwork with lots of water. Popped the inner liner back in and hey presto, no leaking headlamp washer, even after topping the washer bottle up to the brim.

SORTED!