Question about 2001 Hyundai Sonata

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How to change spark plugs and spark plug wires

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  • lucman2 Mar 15, 2011

    I have the 2.4 L I have no knowledge of this vehicle.I purchased 4 NGK platinum plugs and a set of durolast wires I was confused because there were only two wires for four plugs but after looking at the diagram I understand.How many spark plug coils are there? I am told there is only two is that right?I ordered the Haynes manual is this a good one? I'm changing the valve cover gasket as well

    this looks a lot more complicated (more parts) than even my Silverrado 1500.

    Any how thank you so much for the info.so far

    Sincerely

    lucman2

  • lucman2 Mar 15, 2011

    I haven't changed the plugs,wires or valve cover gasket yet but with your guidance it appears to make the whole job easier.We'll see.Right now the car is up at mieneke getting checked out.This is my Grandaughter's car which we bought for her two weeks ago,and from the looks of it(engine compartment) it doesn't look like it has been maintained very well.Meineke says the timing chain looks like it needs replacing.

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  • Hyundai Master
  • 5,370 Answers

If it is the V6, the plugs are located 3 in the front and 3 in the back. The 3 in front are accessible by removing the plastic cover of the engine. The 3 in back need access by removing the header.
For more details with pictures and diagrams for replacing spark plugs and wires.Please click the link below:----- http://technoanswers.blogspot.com/2011/03/how-to-replace-spark-plugs-and-spark.html ------------------- This should help.Keep updated.Thanks.Helpmech.

Posted on Mar 15, 2011

  • raj somaiya Mar 15, 2011

    Yes there are two coils. This engine has (2) coils.They are located above spark plugs number (2) and (3) from left to right.Starting with the fist spark plug on the left: Remove the spark plug cable by pulling straight up on the insulated connector. Using a spark plug socket, remove the old spark plug and install a new one in it's place.

    To access the second spark plug from the left, remove the electrical connector and the spark plug cable wire from coil number (1) and then remove the (2) 12mm bolts that secure the coil to the engine. Spark plug number (2) is located directly under the coil. Lift the coil straight up removing the insulated connector from spark plug number (2). Using a spark plug socket, remove old spark and install a new one in it's place.

    Repeat same procedures for spark plugs number (3) and (4).

    -----------------------

    To locate and change the (4) spark plugs on a 2004 Hyundai 2.4L 4 cylinder engine:

    Remove the (4) 12mm bolts from the decorative plastic engine cover. Remove plastic cover from engine and place it off to the side out of your way.

    Standing in front of the car, the (4) spark plugs are located laterally (left to right) in the recessed area underneath where the plastic engine cover was removed.

    -------------------

    For valve cover gasket removal procedure .please click the link below:------


    -----------------

    And yes the Haynes manual which you ordered will be helpful in troubleshooting and replacing the parts.--------------This should help.Thanks.Helpmech.

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Change spark plugs


  1. Disconnect the spark plug wire at each spark plug.
    • Twist each spark plug 1/2 turn.
    • Pull only on the boot in order to remove the wire from each spark plug.
  1. Disconnect the spark plug wire from the ignition coil.
    • Twist each spark plug boot 1/2 turn.
    • Pull only on the boot in order to remove the wires from the ignition coil
  • Install the spark plug wires at the ignition coil.
  • Install the spark plug wire to each spark plug.
  • Inspect the wires for proper installation:
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