Should the inline fuel filter be full of petrol when car is running on vw golf 1988 E reg?
No, the inline fuel filter should not be full of petrol when the car is running. The fuel filter is designed to trap impurities in the fuel, and it should not be completely filled with petrol. If the fuel filter is full of petrol, it may indicate a problem with the fuel system, such as a faulty fuel pump or a blocked fuel line.