The slow fill concern you are having is likely caused by one of the following:
Restricted vapor canister, kinked vapor hose or fuel vent valve failure.
Remove and inspect the carbon canister for a restriction or the presence of liquid fuel.
If the carbon canister is filled with liquid fuel, the vapor vent valves located on top of the fuel tank are defective and will need replacement.
If the carbon canister is dry, check for a bad canister vent solenoid or kinked vapor line or vent valve.
The vapor vent valves sit on top of the fuel tank and are designed to prevent liquid fuel from entering the evaporative emission lines which are routed to the carbon canister, which acts like a filter for the tank fumes. When the fuel tank gets full, the vapor vent valves block outlet flow and cause the building air pressure (due to incoming fuel) in the fuel tank to be forced out the filler neck. The air pressure causes the automatic shut-off of the pump handle to trip, stopping the flow of liquid fuel.
Tuesday, June 4th, 2013 AT 9:56 AM