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Thread: HOW TO: Change your Sparkplugs

  1. #1

    Default HOW TO: Change your Sparkplugs

    Be sure to read though before starting, to make sure you have all the necessary tools to complete it.

    notes
    - when tightening the spark plug use a torque of 25 Nm or 18 ft-lb
    now i just retighten the new plugs to about the same feel as the old ones, because i didnt have a torque wrench. i have had not had any problems
    - a spark plug socket would be nice and easy, but not necessary

    Step 1:
    disconnect battery using a 10mm wrench or socket. -always a good idea to remove power while working on the engine. plus once you are done, reconnecting the battery will reset the ecu. w/ fresh plugs in.





    Step 2:
    remove engine plug cover. use a phillips head screwdriver or a 10mm socket











    Step 3:
    remove spark plug wires and unplug wire harness - use a 10mm socket to remove the 3 screws on the plug
    note: the plug wires are set in good. meaning its gonna take some effort / pull to get the wires out. dont be afraid - yank on them














    after plug wire removal you can see the spark plugs set deep in the engine block






    Step 4:
    you will need a deep set socket with extension to reach the spark plug in its location. i used size 13/16 deep well socket to reach and unscrew the plug.







    you can use this weird looking thing in bototm picture, or some source of magnetic stick. Or if you get an specific sparkplug socket than you don't need any of this because that socket will have an ruber thingy inside to grab the spark plug O0







    Step 5:
    replace your old spark plugs with new ones
    i have read that its recommended to replace your spark plugs every 6 months if you run your car hard. i used the cheap, but effective NGK BPR7ES as easy replacement







    Step 6:
    put everything back together, reconnect battery and feel the difference. it amazes me the simple changes that you can do to this vehicle to see or feel it running

    torque your plugs (recommended) 25 nm or 18 ft-lb
    I <3 Nisei Engineering

  2. #2

    Default Re: HOW TO: Change your Sparkplugs

    what will be a good replacement i havent change my spark plugs and its been almost 2 years
    - Amiel<br /><br />*** stock ****<br />&lt;img src=&quot;http://i13.tinypic.com/6yd9wgi.gif&quot;&gt;

  3. #3

    Default Re: HOW TO: Change your Sparkplugs

    for evo 8

    BPR7ES is copper

    BPR7IX is iridium
    I &lt;3 Nisei Engineering

  4. #4
    Join Date
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    Default Re: HOW TO: Change your Sparkplugs

    Also remember you can't use BPR7ES/8ES/9ES on Evo 9's. Or any plugs designed for the Evo 8.

  5. #5

    Default Re: HOW TO: Change your Sparkplugs

    yar made a note in my initial entry. you gotta use 9 plugs for 9s. pft... f 9s :P
    I &lt;3 Nisei Engineering

  6. #6

    Default Re: HOW TO: Change your Sparkplugs

    Quote Originally Posted by trinydex
    yar made a note in my initial entry. you gotta use 9 plugs for 9s. pft... f 9s :P
    Thats whatchall say...
    Proud Supporter of Speed Element and Leo aka Detail Addict


  7. #7
    Join Date
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    Default Re: HOW TO: Change your Sparkplugs

    Quote Originally Posted by dizhungryguy
    what will be a good replacement i havent change my spark plugs and its been almost 2 years
    its about that time, sooner than later i say. Btw, what movie is that jessica alba sig from?

  8. #8

    Default Re: HOW TO: Change your Sparkplugs

    could someone list the correct plugs for the 9 on here too please. Thanks
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  9. #9
    Join Date
    Jan 2007
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    Default Re: HOW TO: Change your Sparkplugs

    Quote Originally Posted by joshesh
    could someone list the correct plugs for the 9 on here too please. Thanks
    Already here:

    http://www.norcalevo.net/forum/index...html#msg314795


  10. #10

    Default Re: HOW TO: Change your Sparkplugs

    Quote Originally Posted by Nsin
    Quote Originally Posted by dizhungryguy
    what will be a good replacement i havent change my spark plugs and its been almost 2 years
    its about that time, sooner than later i say. Btw, what movie is that jessica alba sig from?
    good luck chuck
    I &lt;3 Nisei Engineering

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