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Jerking / hesitation

Hi, i seem to have a problem with my kia optima manual gear, petrol, 4 cylinder 2004 model. of recent the car has been jerking / hesitating. I noticed that it seemed to happen more frequently if i am turning. i dont know if turning can trigger such a response? i have changed the 4 spark plugs, also changed 2 leaking plug cables, changed the sensor that is on the top cylinder, i have also washed my fuel tank and tested the pressure of my fuel pump and they say its ok. We have also checked my electrical system and everything seems to be ok. after the above items were done the car seemed to get better and the jerking seemed to stop for a day and then it returned, although it is not as bad as before.

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  • seyiakinbobo
    seyiakinbobo Nov 01, 2012

    Hi, Thanks we have checked all the connections of the wiring and they all seem ok. i'd appreciate more help please. Thank you.

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  • 61 Answers

Your problem must be your connection of the wire try to fix them all.

Posted on Oct 30, 2012

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  • 651 Answers

SOURCE: I have a 2001 Dodge

when is the last time car had a tuneup? plugs, wires etc.??

Posted on Dec 15, 2008

ourhowse
  • 2007 Answers

SOURCE: hesitation problem

Change fuel filter, and or plugs and plug wires. Also, if the timing mark is hopping back and forth when you shoot your light at it, the timing chain ahs jumped.

Posted on Jul 30, 2009

  • 12 Answers

SOURCE: hesitation off the start but then goes away, also in reverse

sometimes using a fuel additive might help. K44 i think is what it is called helps clean the injectors....hope this helps

Posted on Jul 31, 2009

  • 186 Answers

SOURCE: 2001 mercury grand marquis. Engine stutters or

Start car and use a squirt bottle of water to wet the wires and coil, if you see it spark or run rough one or both are bad, repair the wires first as they are more common.

Posted on Aug 02, 2009

  • 257 Answers

SOURCE: 2004 kia optima arcing around the coil pack

the coil pack mybe bad

Posted on Aug 11, 2009

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