Low flow or no flow of windscreen wiper fluid

[JimP]

Hi, new to all this but wanted to ask if anyone has come across the title problem with 62 plate turbo diesel mondeo. Fluid pressure seems to have dropped off with hardly any coming out the drivers side jet. The jets on both sides are clear as is the pipe work under the bonnet. When the feed line to the jets is disconnected and the wipers operated there is flow out of the pipe but with not much pressure. Is this indicating the pump is on the way out or something else? Any help much appreciated.

[MarkRS9]

On my old focus tdci I had a problem with low water pressure, I found a piece of foil (seal from screen wash bottle) blocking the filter. 

Worked fine once removed. 

[JimP]

Ok thanks for the advice