Question about 2004 Kia Optima

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My 2004 Kia optima shut off will driving. It cranks but doesn't want to start up. Can any body help me?

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  • paulmacintyre
    paulmacintyre Apr 11, 2015

    Make sure the timing belt has not broken

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  • Kia Master
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Well , it's probably missing one of three thing's , spark , fuel or compression ! Now you need to find out which one , pull a spark plug wire an hold a screw driver in the end of the plug wire an hold it close to ground an have someone crank the engine over ! don't hold the screw driver by the metal , you don't won't to get zapped . If there is spark spray some carburetor cleaner into the engine at some point ,vacuum hose ,air intake , the throttle plate would be best , there is usually a black tube going from the air filter box to the engine ! A couple of clamps holds it on , take it off an the engine side you should be able to see the throttle plate ! If it tries to start after spraying carb. cleaner in , you have a fuel delivery problem ! Fuel pump relay , fuel pump driver module or the fuel pump it self is bad ! Now if you have spark an sprayed carb. cleaner an it did not try to start you need to check engine compression ! The timing belt may have worn enough for it to jump time a little causing it to be out of time ! Back in the 80's the little cogs on the belt would wear off an the cam shaft wouldn't turn . Back then it was easy to check by taking the distributor cap off a see if it would turn while cranking the engine !

Posted on Apr 11, 2015

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SOURCE: 2004 Kia optima blower motor switch: How to replace??

how do you know the blower switch is bad?

Posted on Oct 16, 2008

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SOURCE: gas cap release button is broken on 2004 kia optima

if you can some how manage to get it opened, spray some lubracant on the button inside the door. if not you'll need to replace the release cable.

Posted on Dec 01, 2008

robshow
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SOURCE: kia optima 2004 transmission selector wiring colour diagram

Try this website www.kiatechinfo.com

This will be far more usefull than me just handing you the diagram

Posted on Jan 19, 2009

  • 1 Answer

SOURCE: crank sensor location on 2006 kia optima

in the tank

Posted on May 22, 2009

seans46
  • 161 Answers

SOURCE: 2004 KIA Optima LX timing belt/water pump

The thing is your doing the timing belt the water pump is right their with it . it should cost you much more at all besides the cost of the water pump. When doing a timing belt I have a rule that I go by The timing belt/seals =cam , crank , any pulley & tensioner & water pump all get replaced at the same time. I did a t-belt on a Audi A-8 very complex whole front of car has to come off as well, he didnt want to do w-pump & thermostat his thermostat was their as well not even a month later the water pump gave out he had to pay double the price because he didnt want to do it when I had it apart the first time. And make sure mechanic is ase certified . good luck

Posted on Jul 02, 2009

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Kia Optima 2004


This could be multiple issues.
1.) timing belt
2.) Crank sensor
3.) Fuel pump (although usually they do not just die they get weak)

Check these let me know.

May 31, 2008 | 2001 Kia Optima

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