Prospect of warmer weather coming in Spring brings back my nightmare of having to get rid my 940 TD IC Wagon; but this tough and hard-working companion can only possibly be replaced by another one of the same, hard to find in good condition these days ! Besides, I'm not dishonest enough to sell it without saying what the problem is, so nobody in their right mind will buy it !

Trouble started last summer when it was so hot 6000 people died here during the heat-wave. Engine will only start when totally cooled down, ie means leaving it overnight. Otherwise starts from cold, runs and idles perfectly, although some of a smokescreen behind when accelerated hard. 245000 kms on the clock as yet.
Since the weather cooled down last fall, it's only happened once or twice on warmer days.

Examined by several specialists including the largest Volvo dealer in Paris who spent (and charged for !) 8 hours of labour without being able to fix it or even find anything wrong. So I said, what do you propose ? They said, well just change the whole engine. I said, OK but are you sure it will fix the problem, they said, er, no.
I could go through a list of everything that was checked, but that would be boring to any proficient mechanic !
Anybody come across this ? Volvo or other turbo diesel ?