I'm in need of some help.
A4 starts good when cold and runs well for about an hour, when it seems to starve for fuel. If, at that time you squeeze the ball between the tank and fuel filter/separator it seems that there is no fuel in the line. But, then, after about an hour, she starts right up/runs well for about an hour. And the cycle continues......
I'm thinking either the ball pump is bad or the fuel tank vent is clogged. Any help/suggestions will be most appreciated....PLEASE HELP!!!!!!