Edelbrock Fuel Pump and Carburetor

Edelbrocks are somewhat known for a common problem of leaking fuel back out of the bowls into the lines. Why I have no idea, but I have read where a lot of people have that issue. I did with my Edelbrock on my Ford truck. Until I put a fuel check valve in the line just before the carburetor. Dorman 800-194 is a 5/16" check valve and 800-195 is the 3.8". They are not cheap, but mine fixed the problem. I have since switched to a Street Demon, so the valve is now a moot point.