Question about 2009 Ford F-250 Super Duty

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Gas tank venting

Can not fill gas tank unless vent line is unhooked up in the engine compartment.

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There is usually a solenoid in the vent system which allows for a Vacuum pull in the system. This is suppose to disengaged when the key is off. Sounds like the solenoid is stuck and the tank can not vent.

Posted on Apr 17, 2014

Testimonial: "replaced purge valve, checked fuse, still a problem. could be wiring? never have check engine light. any help would be appreciated."

  • fordexpert Apr 25, 2014

    Try using a test light before the fuse and see if power is on at proper time. You might want to check for Vacuum with a "T fitting and a Vacuum guage. If someone dropped the fuel tank to replace a fuel pump; they may have pinched a vent line.



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How to replace a fuel tank vent valve

Fuel tank venting is handled by the EVAP system, which includes a vent valve (on the cross-member to the rear of the tank), a canister (behind left rear wheel), a purge valve (on the engine), and several hoses.
If you are having a problem with this system, start by checking all hose connections and then the vent valve (this valve picks up a lot of road debris and usually fails first). Unless you are actually seeing gas on the ground, a gas smell is often caused by this vent valve sticking open.
Another problem can be the canister filling with water/gasoline due to a failed purge valve. And so on.

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Gas tank vent

filler neck vent hose to tank/vent line from tank to carbon canister under hood that then hoses to fuel throttle body.

Mar 18, 2014 | 2010 Ford F-250 Super Duty

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Service engine soon light came on, replaced gas cap it went off but a week later it came back on, when it try to fuel the truck it spill the gas back out like it is a full tank

One of the most common causes, is blockage in the venting system from fuel entering the vent lines and into the charcoal canister, the fuel gets absorbed by the charcoal canister causing it to swell and block vent lines. the gas tank contains both fuel and air. when you fill it up the gas displaces the air and the air has to go somewhere. but the air that is displaced is full of gas vapor so the gas vapor goes to the vent lines and into the charcoal canister, when the charcoal canister swells up it prevents the air from escaping the tank, canister could be clogged,canister filter may need replacement,electrical connection to the close valve may be open,canisterf might be damaged,purge valve from canister might be clogged,vent hoses might be clogged, the vent hose could be clogged, or the vent hose may have a kink. all this is caused by overfilling the gas tank, getting that last drop of gas in the neck of the fill tube.
good luck!

Aug 11, 2011 | 2005 Nissan Titan

1 Answer

Gas comes out when filling fuel tank and not full also engine light has come on with a p1450 code kicked light off and it stayed off

When filling your tank, if the fill hose kicks off and/or gas kicks back up the tube it's an indication that the evaporative emissions vent tube is plugged, the cannister vent valve is not working correctly, or that there is a restriction in the fill pipe/hose. Unless the tank or pipe was recently worked on or part of an accident, you can eliminate it. I've found several concerns involing the vent tube and cannister vent valve. Spiders like to make webs inside of these items and the web blocks the air from escaping. When you fill your tank, the air inside needs to go somewhere. If it can't escape, it will cause the gas to back up and shut off the fill handle or kick gas back. There are ways to check this function with a scan tool and pressure machine but you can also do a visual inspection by disconnecting the valve and looking for webs or debris. You can also run water though the open line or blow shop air though to be sure it's clear. The P1450 is an evaporative emission code and is probably related to the filling concern but could also be a seperate issue. If the concern is not obvious, you will need to have an auto tech hook up a scan tool and perform a pressure test while monitoring the fuel tank pressure sensor. Basic diagnosis is 1.0 0 1.5 hours multiplied br the shops hourly rate. Ex: 1.5 hr. X $100.00 = $150.00 diag charge.

Apr 24, 2011 | 2004 Ford Freestar

1 Answer

Nissan Altima cranks, but won't start. Open the fuel tank, it starts. Gas tank vent? Clogged vent line? Gas cap?

no it has a closed system so no smell of petrol so their is something wrong with the suction pump and the pipes that come from teh engine compartment

Apr 04, 2011 | 2003 Nissan Altima

2 Answers

My 2001 blazer wont let me pump gas into it

This sounds like a problem with your vent tube to the tank. it is a smaller tube that runs next to the larger filler tube. make sure it is not unhooked bent or obstucted in any way.

Nov 16, 2010 | 2001 Chevrolet Blazer

1 Answer

When filling gas tank the gas pump kicks off unless I trickle in the gas. Takes about 10 minutes to fill 18 gallons of gas. What is the fix?

Fuel tank vent hose damaged, kinked, or bent.

Fuel tank vent valve is defective, plugged with dirt, or damaged.

If the car is driven normally and has never been in an accident, it's probably the valve.

Oct 21, 2010 | 2001 Lincoln Continental

2 Answers

Pumping fuel into the car takes forever ,and gas backflows

Fuel Backing up in the fill nozzle is most often caused by a restricted fuel tank vent line. This vent line runs from the tank to a charcole filter that stores the tank vapors while still allowing air to pass. It is typically located in the engine compartment. Look for a pinched hose first in the engine compartment. Typical hose diameter is 10 mm or less. If you have had recent work done on the car in the fuel tank area, this also may have resulted in the line being pinched or rerouted in error.

good luck

Feb 09, 2009 | Hyundai Motor 2003 XG350

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