When fueling my truck it only allows a small amount in at a time?

NATHAN SLABAUGH

MEMBER
2003 CHEVROLET S-10
4.3L
4WD
AUTOMATIC
177,000 MILES

I've been struggling with fueling my truck for the last few months. It'll only let me put a little in at a time. At times, after running the engine for 6-7 minutes, it'll let me slowly add while running the engine. At other times the fuel will come gurgling back out. Most of the time, I just keep a gas can on the truck and add until the filler neck hose is full, then let it find time to drain in when it wants to. What's my issue?

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good evening,

The canister vent solenoid is bad not opening and allowing air to escape during fueling.

https://www.2carpros.com/articles/how-emission-control-systems-work

I attached the procedure and the location for you of the valve.

Roy

REMOVAL PROCEDURE

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1. Raise the vehicle.
2. Lower the spare tire, underbody mounted spare tire only.
3. Disconnect the vent valve electrical connector.

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4. Disconnect the vent hose (1).
5. Bend back the tang on the bracket.
6. Remove the vent valve (3) from the bracket (2).

INSTALLATION PROCEDURE

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1. Slide the vent valve (3) onto the bracket (2).
2. Connect the vent hose (1).

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3. Connect the electrical connector.
4. Raise the spare tire, underbody mounted spare tire only.
5. Lower the vehicle.

Images (Click to make bigger)