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Refueling is difficult V70-XC70 2013

posted by  pbierre on  Sun Mar 10 13:54 CST 2019
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last visit: Sun Mar 30 18:53 CST 2014
[RELATED]

I was filling the tank starting from 1/4 full. The shutoff of the pump occurs 2 seconds after fuel flows.
If I take the filler spout out and start over the same thing happens.

Could the fuel EVAP vent solenoid be stuck closed? The air in the fuel tank is being displaced by fuel, so there must be a vent path back to the atmosphere. I never really understood how the EVAP could allow venting when the car is fueling, but not when the car is just sitting parked. Does this car know when it's being fueled?

I guess I'll put a balloon over the vent air filter opening, and observe whether it expands while adding fuel.
Where can I get documentation of the fuel tank EVAP system, including concept of operation?






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