Question about 2004 Kia Optima

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2003 kia optima 6 cylinder hard to start after fillups only

I have a 6 cylinder kia optima 2003,recall was never done,but i dont think it is related as i have driven so far 160,000 trouble free miles,anyway when i stop the car to fill up at the gas station,(vehicle is off)when i go to start the car after the fillup is complete i experience a very tough start,engine cranks fine but it is almost like there is no gas,to start it i have to push down on the gas peddle and rev the engine for several moments before the engine will stay running,no check engine lights have appeared,and this only happens at fillup,i thought i would outsmart the car by leaving it running,while filling up,but alas,the car was smarter than i,as soon as i started filling the car up while it was running,it started to rough idle and then quit running,so i went back in after the fillup and same thing,if i hold the gas pedal down a bit until the engine starts and then rev it a bit,till it stays running on its own,the car runs perfectly all day long each and every day of the week,except for when it is time to gas it up again, this fillup situation is getting me worried any ideas?thanks

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  • Anonymous Dec 29, 2008

    98 sephia... I'm starting to throw parts at it now... great car just PITA to start after getting fuel. Live in Alaska, and I do not shut the vehicle off when its below 0 out, and it will die when I am refueling.... Evap system... but which part.

  • Sheila Jul 25, 2013

    I have the same issue...I took my car in, and they said there is a open valve cap that is stuck open, and as gas flows through on fill up...it floods the filter which creates the car to have to have a rough start. To fix it would cost $250. But they said it would not harm anything. It only happens after each fill up. This post is kinda old..so I wonder if you ever found the solution, if u haven't traded it in already.

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I had the same problem along with a rough idle and found out it was my EVAP canister.

Posted on Oct 07, 2010

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EVAP Canister Purge solenoid

Posted on Nov 12, 2013

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Try looking into the purge control valve..

Posted on Jun 02, 2009

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Its surprising how Kia has no idea what the problem is since alot of people seem to having the same problem.. 2003 and 2004 Kia Optima have this same issue from what I have gathered from the forums. Mine is a 2004 and after 130000 it developed this problem..and OMG its time to put gas in it again :( headed to Tires Plus today to see what they find. giving them list of things to check that I have found in the fourms.. let ya know how it goes..

Posted on Nov 11, 2011

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Replace you fuel system evaporative filter (charcoal canister), the gas fumes evaporated from the fuel tank are pooling in the filter causing very rich mixture, thus rough idle.

Posted on May 27, 2009

  • 1dot Jan 05, 2011

    My 2004 Kia Optima has the same problem - I will have a non-Kia mechanic check out the evap filter/canister since the Kia dealership kept the car for two weeks, took apart much of the fueling system (supposedly), and still have no idea what the problem is. They also claimed that they have never heard of this before!

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Might want to look into the fuel pump/sending unit and the fuel filter on this.

Posted on Jan 07, 2009

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