Fuel tank vent valve.
September 6th, 2022, 1:19 PM
#1
Fuel tank vent valve.
07 Suburban, I searched the forum and can't find a similar problem. No check engine light. Fuel tank is hard to fill. I checked the charcoal canister and it is not plugged,
I bypassed the vent valve completely and it still wouldn't fill. With lung pressure I am able to blow through the canister into the tank. When I do I hear bubbling in the tank like the vent line is below the fuel level in the tank which is between 1/2 and 3/4. How can this be possible. The vent line has to be above the fuel level for it to vent. Does anyone know how the vent is configured in the tank?
I bypassed the vent valve completely and it still wouldn't fill. With lung pressure I am able to blow through the canister into the tank. When I do I hear bubbling in the tank like the vent line is below the fuel level in the tank which is between 1/2 and 3/4. How can this be possible. The vent line has to be above the fuel level for it to vent. Does anyone know how the vent is configured in the tank?
Last edited by buttanic; September 7th, 2022 at 11:29 AM. Reason: new information
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