Kia Fuel System, Other Storage Tank Assembly Mounting

OPTIMA 2004 V6 LX, manufactured by KIA MOTORS AMERICA, INC. my vehicle reached 300,000. and the consumption of fuel is going up. fuel injectors cleaned twice. and it delay to starts.

My daughter has an 02 Optima that had the same problem. Ran several hours of
troubleshooting including removing and checking the cannister, which was fine. I
finally found a 1-way check valve that was installed backwards (at the factory).

i pull the start relay under the hood and the fuel pump kicks on original fuel pump would not com on 2003 kia optima

I have a 2009 Kia Rondo EX-V6. Periodically the whole digital instrument panel fails: spedometer, fuel gauge etc.stop working. The problem resolves spontaneously after driving for a bit and/or stopping and restarting the car. The dealer says th