When I bought this vehicle back last summer it would offen run rough on idle as if it was 'misfiring' or was a petrol engine with a plug lead removed. I have lived with the problem but its got a lot worse recently and in 'kangarooing' even when driving normally which it has never done before. When idling the engine will act as if I am blipping the throttle, run rough and smoke then after a minute or so clear itself before then happening again 10-20 seconds later.

Does this sound like injector faults? A local diesel specialist say he can test them on a bench for a couple of quid each and they just unscrew. Firstly does my amateur diagnosis sound correct and secondly is removing the injectors as easy as this chap suggested?

Many thanks in anticipation of any help you can offer

Edited by stuartl on 20/01/2015 at 17:17