right, heres the scenario: i have a peugeot 205 xld (diesel) 1991. its cutting out constantly. i have deducted that air it being sucked INTO the fuel lines somewhere. there is a clear pipe between the fuel filter and the the injectoin pump of the engine. once i have bled the system fully and run the engine, it all seems good, there is no air in this pipe, all fuel . but then after a while i start seeing air in the line, then the engine starts to cut out and then stalls - fuel starvation. my question is, how do you think air is getting into the fuel system? anyone had any similar problems? thanks Will