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Thread: Oily spark plugs

  1. #1
    Join Date
    Sep 2017
    Location
    CYPRUS
    Posts
    8

    Oily spark plugs

    Hi guys!

    I dont write often but i read a lot, and getting many usefull info from here.
    Trying to do as much as possible myself, and just replaced front struts, stabilizer links, bushes, control arms and tie rod ends!

    Yesterday i replaced the iridium spark plugs (after 70k), and noticed very oily second one (from left), and little oily the 4th one.
    Oil was dripping when i removed!
    I didn't notice anything strange in car's behavour. Any ideas what maybe the problem?
    Can be because of the old spark plugs, not sparking properly?

    Thanks in advance!

    Its a 2009 1.5 2wd

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    1625722736263.jpg
    Last edited by dimitris; July 7th, 2021 at 10:48 PM.

  2. #2
    Join Date
    Sep 2016
    Location
    Greenfield Center, NY, USA
    Posts
    230
    Hello, the oil is because of a leaking valve cover gasket. The oil is dropping down from the gasket and going into the hole where the spark plug resides.

    Sent from my SM-G935V using Tapatalk

  3. #3
    Join Date
    May 2011
    Location
    Ottawa, Ontario
    Posts
    1,615
    You need a valve cover seal kit and a tube of sealant.

    There is a vid in "How To" Thread . Very simple easy to do.
    2007AWD auto.212k km..K/N air filter,AUXinput,Grp34size Battery
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  4. #4
    Join Date
    Sep 2017
    Location
    CYPRUS
    Posts
    8
    Thanks guys.

    I found it. Looks straight forward. I have rebuilted couple of motorcycle engines before.
    From what i saw, no sealant needed on the gasket itself. Just on the halfmoons and metal connections of the perimeter.

    http://clubsx4.com/forum/showthread....t=cover+gasket
    Last edited by dimitris; July 9th, 2021 at 04:32 AM.

  5. #5
    Join Date
    Sep 2017
    Location
    CYPRUS
    Posts
    8
    Just an update.
    I started the procedure to replace the gasket, but this time the plugs were dry, not any signs of oil
    So, i just put back... didnt procceed the the replacement...

  6. #6
    Join Date
    Nov 2010
    Location
    Council Bluffs, IA USA
    Posts
    1,906
    I suggest pulling the plugs again in a few thousand miles/kilometers and checking them just to be sure.
    '09 SX4 AWD 5-spd Technology Copper Sunlight Metallic - RIP
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  7. #7
    Join Date
    Sep 2016
    Location
    Greenfield Center, NY, USA
    Posts
    230
    Oil leaks are slow, it's not like it just happened and then stopped. They will get oily again. You should still replace the gasket.

    Sent from my SM-G935V using Tapatalk

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