Question about 2002 Kia Sedona

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How do u change the 3 spark plugs that are right against the firewall?

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  • christoph109 Jun 25, 2009

    Thanks for your help.

    The plugs are probably the originals and the van has some 180,000 k on it. Its running rough and its time to change them. The dealer here ( Niagara ,Ontario) wants $500.00 to change them. Nuts to that.

    regards

  • christoph109 Jun 25, 2009

    hi there;

    The only way to get at the plugs is under the air plenum,

    really a poor design.

    Thanks

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  • Kia Master
  • 3,854 Answers

Here's how I do it: -Pull the coils out on the front bank and change those first 'cause they're easy.
-Remove air box top and intake tube from throttle body as a unit by removing 10mm bolts in air box and 10mm clamp on throttle body (unplug MAF sensor too)
-Unbolt brackets from rear of upper intake (one of them actually has to come off...the one on the left, I think...). 
-Unplug all the assorted gizmo's on the plenum, and the wiper motor plug (it's sort of in the way...). The connectors are all different so there's no worry about mixing them up...
-Unbolt all of the visible 10mm bolts on top of the intake plenum that hold on ground wires and cable brackets, etc.
-Undo the plenum bolts (12mm), keeping care not to lose the lock washers from the two nuts on either end (warning, us a rag to cover the intake ports). 
-As far as I can remember, you should now be able to lift the plenum up and to your right enough to get at the rear plugs. You shouldn't need to remove anything from the throttle body (cable, connectors, coolant lines...). It can be held up with a bungee cord or something. Or perhaps an assistant...
-After changing plugs, assembly is reverse of removal. You can replace the gasket between the upper and lower intake if you wish, but it's metal and usually in quite good condition. Good luck and hope this helps

Posted on Jun 24, 2009

  • Harvey N Tawatao
    Harvey N Tawatao Jun 25, 2009

    Canadian too my friend in Cambridge. You can always ask a shop tech to help you change the plugs after work or on a week end and offer him $150.00 for his time and experience. I am sure he will not get paid that much if he does the same job at work. Just a hint if you think the job is going to be to much for the average home tech. I have a Montana and i used to change the rear plugs from under the van, but now i just change the front 3 plugs and take it down the street to the local garage with a life and get the 3 rear plugs changed in under 45 min and cost me $65.00. Not sure if you can get to the plugs from under your Sedona, but if you ask a few tech, i am sure they can tell you the best way. Keep me posted, i'll be in Niagara this weekend. be safe

  • Harvey N Tawatao
    Harvey N Tawatao Jun 25, 2009

    I though so on your sedona, plan B always see if you can get a tech to help you after work or on the weekend. Keep me posted. 

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SOURCE: How do I change the 3 spark plugs on the back of engine

The upper intake has to be taken off to get to them. Yes it is a pain in the but, not too hard to do, just bothersome to do this to be able to change plugs. Make sure to be careful when loosening the intake as the head is aluminum and you can damage it if you take a gung-ho approach. You will need to replace the gasket but it is only around 12 -15 $ .

Posted on May 08, 2009

  • 1 Answer

SOURCE: how do you change the spark plugs on a kia optima 2.7 v6

you have to remve the bolts on top and sides of the plenum assy be sure not to drop anything down in the lower intake!!!!! the bolt heads are 12mm and there are 2 on top 2 on the ends and three int the front

Posted on Apr 16, 2009

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