Hi I have a doblo 1.9 jtd 54 reg
It has had a missfire and very bad vibration at tickover it clears around 1200 revs it's been like it for several mounths and is know getting me down its been plugged into several diagnostic tools and no fault found when driving it runs fine fuel consumption is good it's has had a sir vice and I've checked the air pipes any help would b gratefully received thanks in advance colin