Thanks for the idears Marque. Had a quick look today and found that the vac pipe had been almost chafed through, done a quick bodge till I can get a new one. How do you get to the fpr filter? I pulled the clip off the fpr and I take it the filter is underneath and just pulls out . Its very tight so left it alone for now. When I changed the tank filter it was almost clogged so some crap could have got further down the system. As for the pump pressure will have to get that checked out, but as it goes ok at the top end I would guess that's going to be ok..........??