A question for a Vauxhall mechanic: Combo Van 1.7cdti, 2005. A few months ago, although it started all right, initially it would not idle when cold and then after a minute or so idled but kept hunting until it was warmed up - after that it ran and idled perfectly all right. Recently, it has begun gradually getting worse, not idling until warmed up and even then still hunting slightly - when warmed up, it runs perfectly all right just giving the slight hunting on idle. Also in cold weather, it is now sometimes reluctant to start unless the glow plugs are activated more than once by turning on and off a couple of times.
AN ANSWER WOULD BE NICE, PLEASE!