Gas tank

10

Asked by Nov 05, 2015 at 10:26 AM about the 2007 Chrysler Town & Country 4 Dr Touring

Question type: Maintenance & Repair

When trying to fill my gas tank I can only put in small amounts of gas at a time
because something in the tank is making the gas nozzle shut off prematurely.

6 Answers

EVAP problem. The displaced air and fumes go through a charcoal canister where the hydrocarbons are absorbed in the charcoal, then purged when engine is started, instead of going in to the air. This diagram is generic, not specific to your Chrysler, but they are all very similar or same. The vent tube may be plugged, or any of the vent valves stuck. Click image for full screen

7 of 7 people found this helpful.
535

Check the anti-rollover ball in the filler neck too. I've had to replace quite a few of them over the years for thei same reason. I cannot see the EVAP CONTROL causing this problem as it only deals in a very small amount of fuel vapos and should not be able to halt filling the tank.

1 of 1 people found this helpful.

As you pump gas in every unit of volume of gas must be displaced somewhere. Gas pumps flow fast, and all air must be pushed out. It's not a very small amount. And it happens rapidly. The air and fumes pass through the canister immediately, all of it, and if a vent valve is stuck my friend it sure will prevent gas entering tank

3 of 3 people found this helpful.
10

We'll see , I'm taking to my mechanic.

1 of 1 people found this helpful.
535

Mr Fordnut: the modern fuel delivery systems where fuel is dispensed, (read: "gas staion") have their own vapor reovery system that collects the fumes and vapors during the refuelling process. By negative pressure in the vapor recovery hoses, the station collects them into the station's own recovery tanks. There is no way an on- board vehicle's ECS system can or could handle all the displaced air/fumes inside a vehicle tank during refueling. If ...for some reason the station doess not have such a recovery system, there are vents surrounding the vehicle's lead-free nozzle inlet, that will allow any .... I repeat: ANY and ALL refueling vapors to just escape. There's no way the vehicle ECS is involved during refueling processes unless the engine is running too.

1 of 1 people found this helpful.

Point Taken.

1 of 1 people found this helpful.

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