TKO

Ok, i took my girlfriends car up to the local mechanic, left it up there, and asked them to go through a scan to check a few FRONT END parts, so that was fine and everything. Same day after pick up we go to fill up the car, and it was fine until about 8 dollars and the fuel exploded out from where the nozzle goes in, thus causing a scene. So today i tried it again, same damnned thing, But if i go slow like every .75 to a dollar and stop, and let it equalize, its ok, it took ten minutes to put 8 dollars in, never had a problem before, i asked around today and i heard things about a vent for air? is there another vent to release gas fumes from the tank besides the nozzle? is there anything i can try? and should i reset my battery? and btw, the guage is way off now, it changes whenever it wants, and idk what the heck happend, thanks for the help

TKO

May have just been a fluke, but I have been looking around and this is a common occurance to many vehicles, there is a filter, or vent, on top of your gas tank, when you try to pour gas from a gas can, if the top part is not open, gas doesnt fill, its the same for a car. It makes perfect sense. I need to know the location of this part, and i saw you can blow it out with Co2. She lives in a woodsy and a swampish place, perfect for spiders and stuff, so I'm thinking that there are webs clogged up in the vent, just so weird for it to happen right after i take it to the mechanic.

Bert

What year and car is it?

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Bert

TKO

1999 Mercury Mystique, v6

TKO

I loooked under the car today and noticed a smaller line going to the filling nozzle, its above the main line where you fill yoiur car, i think this is the vents that relieve air pressure in the tank while filling with gasoline. I took co2 and tried blowing it out, but i went to fill up the car today, and it went a little better, mind you i left the cap off all night, and this morning until i filled. It still clicked when i filled, but filled faster, and did not blow out. Is it the gas cap? Maybe a way to pressurize the tank to clear out the vents to the tank?

Bert

You shouldn't have to pressurize the tank. The cap wouldn't cause that.

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Bert

Bert

1 Fuel tank

2 Fuel filter

3 Fuel tank filler pipe

4 Fuel tank ventilation

5 Fuel tank roll-over valve

6 Fuel tank pressure sensor

7 Fuel pump

Attached Images

Fuel1.jpg (80.6 KB, 4 views)

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Bert

TKO

So what are the hozes on top of the fuel filling nozzel? And by the picture it doesn't look like 5 and 4 connect. Am I right?

Bert

They do connect. It's a blow-up diagram, just like the filler pipe isn't in the tank.

The small hose let's the pressure back so it fills without kick back.

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Bert

TKO

So where should I go from here? Drop the tank? Is there any spots that I can pump co2 into to unclog the vents?