I had a post on the td5 forum regarding air getting into the fuel, and stalling/preventing air bleed.

There was a split on hose by filter so I fixed that and then when I started I had loads of diesel coming from tank.....so I dropped front of tank enough to see the fuel lines in the pump....the green one was completely off which makes sense! Went to clip it back in but it had two brown/orange o rings and 1 or 2......I think 2 but ive since possibly lost one..spacers. If I put one o ring on end of tube and click in it leaks only a little.....if I try 2 o rings or 1 o ring, spacer and other o ring then it won't click in.

Are these o rings from inside the female part of the connection and if so what's the solution.

Bumpy bumpy, does anyone know anything about these o rings and if I can put them back in somehow? I've managed to get 1 in but it's leaking...albeit slowly

I can sympathise, but I don't have a solution. I have had similar troubles with mine, but gave up and bought a new hose with new connectors on each end. Those clip on connectors are a nuisance. After a while they won't grip the spout on the pump/filter housing/fuel pressure regulator any more and it becomes difficult to get them to seal properly.