What I thought was a simple blocked pipe turned out to be a blocked pump filter. Had to remove wheel arch liner, loads of wiring and then the tank itself. Drained the tank, pulled the rubber filter, cleared the sludge and put it all back together. All working perfectly again.

 

What was the cause of the problem just a dirty filter.

 

Yes, just a blocked filter. Was covered in a gloopy slime. Cleaned the filter and washed the tank out. Refilled and all blasting with high pressure again.

 

The context here possibly was windshield washer fluid spray nozzles were inoperable? The problem was lack of spray coming from the nozzles, the root cause being the supply filter and or pump being clogged with goo? Thanks for any clarity.