Screenwashers

[peterhw]

Hi - my first post so hope I am in the correct area.
I have a 2007 C Class and have had problems with the drivers side washer jet.
I have tried several times to have it replaced and each time the garage has failed to do the job.
I thought I'd try myself.
I gently eased the bonnet grill out after WD40 treatment of the 3 rusty screws
I eventually managed to remove the washer jet by locating the 2 'push in lugs' down the side.
Found correct part on eBay and fitted
Job done water emerges from both jets - great!
Next time I get in the car no water from either jet.
The pump appears to be operating. The washer bottles is topped up. I haven't touched anything other than the 1 faulty jet.

WHERE to look next ?

 

[AMGeed]

Follow the plastic tubes from the filler bottle back to the washer jets. Either one or more have become dislodged, are blocked with sediment or you have a leak.

Can you remove the pipes from the washer jets and operate the washers to see if water is getting through?

 

[peterhw]

Many thanks.
Took another look after my post yesterday and so difficult to trace anything back to the filler bottle. No idea how one gets to the bottle and pump - maybe wheel removal and panels inside wheel-arch (more than I would want /able to do).

The bottle is full - i.e. up to the top of the filling 'neck'.
I haven't removed the tubes from the nozzles but would seem unlikely that both fail together particularly as both were working a few days ago (the existing passenger side and the new drivers side).
The pump sounds like it is working but no water anywhere and the bottle remains full. (would suggest that nothing is 'dislodged' and leaking to ground)
Appears (to me) that the the pump is not actually pumping or some blockage probably near the bottle.
Perhaps I'll try again and 'blow down' the tubes to see if that disturbs the water (i.e. here it bubbling when the air enters the bottle)
Thanks again for your response