Car jerks after right turn & gets no fuel ….

Good evening !! I have a problem since a long time. I was already in a Peugeot workshop, but they could not help me there either. I describe my problem: So ….. If I am on a straight track from a right turn and want to speed up, then my 106 is pushing very much & I can push on the gas as I want, he apparently does not get fuel. That is always a problem for me when driving up the motorway, because I because I don’t get out fast enough, or at Bergen, if I want to go up there & there’s a car behind me, I almost stop because I can’t give a gas. What could this be about ?? At the moment the problems with my little coach pile up. MFG