intermitant loss of power/misfire

[rhurt5]

I have intermitant problem with a t reg non turbo transit,very occassionally you will be cruising at a steady pace say 60 mph and it will lose power/misfire and you have to pull over and with it idling all be it rough crack of the fuel line nut at each injector and she starts to run fine again its almost like there is either no fuel or air in the pipe,do you know if this is a common problem and if so whats the cure.as its driving me nuts
cheers for any input
ray

[MrMPuk]

Move the leak off pipe from injector number 4 to injector number 1.

[rhurt5]

ok how do i do that?is it just 1 pipe or a series of pipes?also is this a comon issue?
many thanks
ray