I gone to do my glow plugs and I can only find 3 plugs do you think one has broke off as there is no power connector to that one either, and also the one right at the back is just turning and not coming out, any ideas

j.d services, July 2014

There should definitely be four plugs and it sounds like someone has had a go to do these and left one broken in, I remember a guy at a local workshop having the same problem as yours and he ended up taking the head off to drill out and tap the threads to do the job properly as access could be severely restricted on these.

cdc, July 2014