Well blown out all the lines they seem clear but still only just hits the screen so not sure what’s next tank is all clear new pump sounds ok

well 2 things left to try.

1) Disconnect pump connector and apply 12v direct to the pump. (to rule out electric fault) See if that squirts higher.

2) Route in a new piece of pipe. (temporary run first to see if it fixes it)

Well blew out the tea one and that works now so I assume the current is all ok so have put a mix of Vinager and white wine vinegar after blowing the line out I have them working at just below half way on screen so I’ll try cleaning them if not I think I will just replace the pipe from pump to bonnet