Posts: 597 From: Sarasota, Fla. USA Registered: Jun 99
posted 12-12-2001 09:07 AM
When you shut off the fuel pump, is it normal for the fuel in the lines to try returning to the fuel tank? I would think there should be a check valve in the pump to keep that from happening but all three pumps iv'e tried allow the fuel to return to the tank when shut off.
Posts: 121 From: Connersville, IN Registered: Jul 2001
posted 12-12-2001 12:27 PM
I've never checked the fuel line with clear tubing like you have. I can tell you that when I turn on the fuel pump after it has been sitting for a while, it takes a few seconds to build pressure. Based on that, I would say that some of the fuel does return to the tank. I still have never experienced the pressure drop like you have once the pump is running.