Mechanics

FUEL TANK FILLUP PREMATURE SHUTOFF

2005 Ford Taurus

2005 Ford Taurus 6 cyl Front Wheel Drive Automatic 142k miles

I would like to know if this issue can be cause by a check valve within the Fuel Tank for roll over gas spill protection, don't know if this exists on this vehicle. Or can this be the Fuel Pressure Sensor or related component. This seems to be pronounced in the summer with extreme heat. In the fall or winter it may happen intermittently but usually can fill up after several attempts. I can only theorize that perhaps the check valve in the tank becomes pushed to a closed position when enough tank vapor fumes buildup thus closing valve. Also I've had to use a tool called KleerDrain which uses a CO2 Cartridge which is suppose to be used for clogged drains to burst air into the Fuel Filler Tube in order to fill up my gas tank since I cannot fill it any other way. I don't feel comfortable to continue using the KleerDrain due to possible tank contaminant of small fragments of Power Disc(plastic thin flexible disc to increase CO2 burst). I would like to get an idea of possible solutions so I can repair myself and any test that I can run. I thank you for any advice.
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Dmoral1
June 14, 2010.




When the fuel tank is being filled, never fill beyond when it clicks off or this can result damage to the vent valve.

Need to figure out which side the blockage is happening.

Try disconnect the vent hose from gas tank to charcoal cannister and if refueling is normal then blockage is present from canister side, otherwise it is on the tank side
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I'm not sure where to disconnect since most of the hoses are interconnected to a hose splitter(Tee).
Are there built-ed in vent valves in the hose splitter or hoses? or are the vent valves within the fuel tank?
I have uploaded some parts pics.
The parts list do not show any specific vent valves as a separate unit.
Please advise how to disconnect if possible or another test to pinpoint issue.

Thanks


http://www.2carpros.com/forum/automotive_pictures/539192_parts_1.jpg



http://www.2carpros.com/forum/automotive_pictures/539192_tank_1.jpg


Tiny
Dmoral1
Jun 20, 2010.

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