Running veg.. now wont start

[Adam.M.Penny]

hi all

i was using veg for about 3 weeks, all new stuff, and i was quite impressed to be fair... but 2 weeks ago i was on my way back from derby and it started to stutter, and eventually got to the point where it was really lumpy idle and kept cutting out, i had to pretty much left foot brake all the way home, just so i could keep the revs up when slowing down for a junction.

i had a look the next day, and it took forever to start, the hand primer wouldnt get hard, and when started, if my foot was planted, the max rpm was only 4000, and even with my foot down, the revs drop after about 15 seconds, and it eventually dies....

ive dropped out all the veg, put diesel in, blown out all the lines (tank to filter, fuel return, all injector lines and filter to pump) with the air compressor, changed the fuel filter, even tried it without, but still no luck.

ive left it for the past week or so because of the snow and its starting to irritate the hell outta me..

just wondered if anyone has had a similar problem, or knows what the problem might be ?

Thanks, Adam