2016 Hyundai Accent - Won't start after fillup

2016 Hyundai Accent and after filling up with gas, it won’t start

is there a check engine light on?
Purge valve, how it works, symptoms, problems, testing (samarins.com)


When you fill the gas tank the gas fumes are supposed to be directed into the charcoal canister but not into the engine. Then once you start the engine and start driving the fumes stored in the canister are directed into the engine. There’s variouis valves that are turned on and off to make all this happen. If one or more of these valves aren’t working, the fumes may go into the engine directly during the gas tank filling process; that can make the mixture so rich it won’t start. A good shop can easily test that theory. You might try holding the accelerator pedal all the way to the floor during cranking. If that allows the engine to start, it would confirm this theory.

In addition, the only time I’ve ever had that was a weak fuel pump. Banging on the tank with a 5# hammer got the pump started again. Time for a shop to take a look though.

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