Rear Washer Problem

[nbramwel]

My son has a 2017 facelifted Octavia S.  Yesterday we finally got round to looking at why the rear washer doesn't spray onto the rear screen (the rear wiper works fine).  Following advice on this forum we removed the front nearside wheel and liner to expose the fluid bottle and pump.  We disconnected the pipe from the pump to the rear washer and tested that the pump was working OK.  It sprayed fluid from the pump fine so we reconnected the pipe.  We then removed the nozzle from the rear washer/wiper and tested again but nothing came out although we could hear the pump working.  There is clearly an obstruction somewhere in the pipework.  We had a good look inside and underneath the car and in the boot to check for leaks but everything was dry.  My questions are:

 

Is there anything between the pump and the rear nozzle which could be broken e.g. a secondary pump or some kind of valve?  If so where is it and how easy is it to get at?

How is the pipework routed from the front to the back of the car and again how easy is it to get at?

Is there a common spot where blockages could build up in the pipework and, if so, where is it?

Has anybody any suggestions where we go from here as this may be an MOT failure (but not sure).  Many thanks.

 

[ords]

My rear washer didn't work for many years and never failed the MOT, not even an advisory note.