Hi .
Tried everything you have told me .Ihave even removed pipes from pre fuel heater and connected pipe from tank to new fuel filter assembly.
I also blanked off injector leak off pipes[do not see why air can get into suction side of fuel system as leak off is on pressure/return side].I fitted on a separate tank with fuel pipe direct to fuel filter which cured problem. I had fitted a clear plastic tube on return to see if air was in fuel system .Iwonder if air can be sucked in through seal behind drive gear on pump[bosch]
Still bad starting
Moderator: RichardW