Question about 2004 Kia Optima

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2004 Kia Optima

I have a 2004 Kia Optima and lately when I accelerate there is a popping noise. I can almost feel it as well. At first I thought there was something loose in the truck and hitting up against the side panel. Not the case. Anyone experience this before? If I accelerate slightly, the noise is not very pronounced, maybe even sometimes doesn't make it at all if I am real easy on the acceleration. Thoughts?

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  • 4 more comments 
  • Robert Buckingham Oct 08, 2008

    This is not a truck. It is a 4door sedan, 4 cyl. automatic.

  • Robert Buckingham Oct 08, 2008

    My apologies, I wondered why you were asking if it were a truck.

  • donramiro68 Oct 12, 2008

    i had my timing belt changed and thats when thesame problem, started for me as well

  • yadayada
    yadayada May 11, 2010

    You say truck in your post, I guess you meant trunk

  • yadayada
    yadayada May 11, 2010

    Is this a truck?

  • Frank B Feb 26, 2013

    I also noticed this problem after changing the timing belt



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Chances are you have an issue with one of the following

1.) Spark plugs and or wires (Boots)
2.) Coil
3.) Crank Position sensor (or Blade)
4.) Timing belt may be heading for replacement.

How many miles are on the car?
I recommend having the timing belt replaced at or before the recommended intervals as with theses cars they almost go like clock work.

Posted on Jan 21, 2009


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Your best bet is to look into timing belt either breaking or jumping teeth.

Check the following website. you have to sign up but this is direct from kia.

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