Week ago i changed the sender unit as it was corroded to hell and struggling to start. I changed it for a new 1 bled the system and been fine for a week.now it struggled again. Started after 10 seconds or so.where else should i be looking.
What sort of condition are your injector leak off pipes?
Mine was doing the same, as in turning over for 10 seconds or more before firing up, changed the leak off pipes for new as the old ones had had it and it's been fine ever since.