Aggieturbo

This has been posted in another forum, but Im not sure how many people read each one, so here goes... Just paid over the odds for an old 110 2.5TD (1988) and spent too much getting it through the MOT, Now it's started miss firing at the higher end of the speed range. It seems to be fine through all the gears, even if i rev the nuts off it but as soon as i got above 50 it started to die, like taking you foot off the peddle. Once the revs dropped a bit it would pick up again but only until the speed got back up over 50. I've changed the fuel filter and it could be a little bit better (now seems to do it over 60), or it could just be my imagination! The lift pump was replace about twelve months (1000 miles) ago so i left that alone. I don't know a lot about this engine, what sort of top end will it have anyway? is there any mileage in changing the glowplugs (do they deteriorate like spark plugs?) or injectors. Can i perform any tests to see if it is a fuel related problem as i suspect? Can anybody help, the other half isn't very happy as i sold her shiny little Polo to buy myself this Landy!!

Thanks for the link and the pictures, I've had a look and will probably put them in as soon as i've sorted out another problem which has arisen and is a bit more pressing. See the new post if you think you could help with a power loss problem.

I've recently bought a 1988 110 SW fitted with 11 seats but only 5 seat belts (in the front 2 rows). Whats the best way to fit belts for the 6 inward facing seats (2 x 3 person benches)? I guess the anchor points need to be strengthened or the load spread over more than just one bolt, but as I don't know anybody else with this modification I'd welcome any ideas please.