Hello dear Volvo municipality. Our Volvo V70 2.5l BJ.97 now has impeccable 190000km on the hump. For about a week, it starts to jerk in the warm state and takes on bad gas. The warmer / hotter the engine gets, the worse it gets. In cold condition, starts up and behaves naturally normal. Bad gas adoption then only very briefly. Io ignition cables should be. Spark plugs have been replaced. Distribution cap and distributor fingers should also be IO (but who knows). Is there any of you who knows this problem??? By the way, I have already tried the SEARCH. Unfortunately not found the right thing. MFG Marcus