Car won't start after gas fillup!!! - Kia Forum
 
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post #1 of 6 (permalink) Old 11-03-2009, 04:56 PM Thread Starter
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Unhappy Car won't start after gas fillup!!!

Someone please HELP ME!!! I have a 2005 Kia Optima. Whenever I go to fill it up with gas it won't start right away. It usually takes 3-5 times before it will start but after that it runs perfectly fine. I've tried letting the gas get down to 1/2 tank and 1/4 tank and both times after filling up I can't start it. This only happends after I get gas. I've tried fuel injection cleaner and it helps a little but then it goes right back to the same old thing. Does anyone know what this could be and how to fix it??
Thanks!
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post #2 of 6 (permalink) Old 11-04-2009, 03:23 PM
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Welcome to the forums. Make sure you are not filling the tank too high, try stopping just short of full and see if it makes any difference. Some cars seem to not like being filled to the brim, the problem is to do with fuel tank venting, we had a Nissan that did similar to your car. Best of luck.

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post #3 of 6 (permalink) Old 11-05-2009, 09:30 AM Thread Starter
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I've tried not filling the tank all the way up, I never top it off either. I hear Kia's are sensitive to that. I'm thinking of trying this stuff called Seafoam motor treatment but just in the gas tank only. Has anyone done this and do you think this will help?
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post #4 of 6 (permalink) Old 11-05-2009, 02:44 PM
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The only other thing I can think of is that maybe the tank has sediment in the bottom that is stirred up when filling and blocking the gause on the fuel pump pickup. You might have to look in the top of the tank and see if the inside of the tank needs cleaning. Just remember to get rid of any fuel pressure before disconnecting any hoses and disconnect the battery for safety.

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post #5 of 6 (permalink) Old 12-07-2009, 09:54 PM
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Originally Posted by irish75 View Post
Someone please HELP ME!!! I have a 2005 Kia Optima. Whenever I go to fill it up with gas it won't start right away. It usually takes 3-5 times before it will start but after that it runs perfectly fine. I've tried letting the gas get down to 1/2 tank and 1/4 tank and both times after filling up I can't start it. This only happends after I get gas. I've tried fuel injection cleaner and it helps a little but then it goes right back to the same old thing. Does anyone know what this could be and how to fix it??
Thanks!
It could be the EVAP purge valve/solenoid, not sure what KIA calls it. It could have failed stuck open and this would allow the gas fumes into the engine causing the mixture to be too rich to start.
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post #6 of 6 (permalink) Old 12-09-2009, 08:25 AM
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It is definitely as stated above. It is the purve valve. You will get a check engine light from this eventually. Replace it and you will be all set!

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Originally Posted by naconi View Post
It could be the EVAP purge valve/solenoid, not sure what KIA calls it. It could have failed stuck open and this would allow the gas fumes into the engine causing the mixture to be too rich to start.
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