so after my post I went back out to troubleshoot the car.

I unscrewed the fuel line to the # 1 injector then went inside the car and cranked the engine over. No fuel coming out of the fuel line.

I then removed the fuel pump relay and jumped it, this time I could hear the pump buzzing however no fuel coming out of the fuel line.



what should I check next? Fuel going to the fuel distributor? I recall the VW CIS had a warm up pressure regulator and the 300E should have similar, that would increase the fuel pressure when the car was cold, perhaps this is bad?

What would be the next steps? Could a massive vacuum leak cause this? I was always suspect of the idle air hoses?