Got the truck MOT'd yesterday and picked up this morning.
All good except that injector nbr. 5 is leaking, and that's the one you can hardly get at.
It's the one at the rear of the head under the windscreen.

Long and short of it :
It will have to be dealt with because if gasses can come out air could get in and that's where it all starts going
tits up according to my mechanic.
If they can get it out it might be just a case of replacing a 'washer' and screwing it back in again ??

If the thing won't budge the head might have to come off and it remains to be seen what the condition of the thread is.

Any opinions on this from the technical department ??