I have come further in my quest to find the problem. I have now noticed that it is actually not when my car gets warm that the problem comes. It comes after I do some fast cornering As long as I drive slower, during cold engine temps, the car is fine as i take it easy but then when it gets warmer i go little bit faster and therfore i thought untill now that it was becouse of the warm car that the problems occour.
After cornering the car cuts out on fuel and stays like that, thats why I have to pull out the choke in order to make it go again. The question is now, is the problem with the pump in the gastank, my fuel pump or in my vergaser? Both the fuel pump and the 34 Weber is new!