Thanks for that thought - I will be doing as you suggest and replace fuel/air filters . A cheap fix if that cures it !

Thanks - will try out those suggestions and post the results

I take it an 'Italian tune-up' is just to give it a big load of wellie ! I haven't checked the banjo filter so will have a look at that - thanks for the input.

I am experiencing the engine surging when accelerating and when engine is under load. Overall performance seems OK and surging stops when cruising at constant or light throttle. My Bongo is a 2001 2wd diesel auto. Has anyone had a similar issue and possibly a solution?