why are there air bubbles in my fuel tank when my motor is running
I have a 2006 kia rio5 sx,when the motor is running I hear air bubbles coming from the fuel tank.When I put gas in the car it is hard to start.A trouble code showed a vacuum leak.
you could have a bad purge solenoid, or evap canister. you don't top off your tank do you? that will get fuel in the evap system and cause problems too. check for vac leaks, if you cant do it yourself, you may have to go to a shop that can do a smoke test on the system.
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