Oil in spark plug cavity
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Cadillac SRX First Generation Forum - 2004 - 2009 Discussion, Oil in spark plug cavity in Cadillac SRX Forums; Today I changed the plugs in my 2006 V6 and found a substantial pool of oil in 3 of the ...
  1. #1
    Dakaty is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Apr 2007
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    25

    Oil in spark plug cavity

    Today I changed the plugs in my 2006 V6 and found a substantial pool of oil in 3 of the deep spark plug cavities. The Mobile 1 was very clean and fluid. It drained into the cylinders when I removed the plugs. (Lots of smoke when I fired it up the first time!!)

    All of the plugs looked fine for 86,000 miles with no oil fouling. The V6 does not leak oil on the driveway or in the engine compartment, although it uses a quart every 5000 miles!

    Anybody have any ideas what causes this?

    Thanks

    Bill

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  3. #2
    droctane is offline Cadillac Owners Member
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    Classic tube seal leak. Replace the seals when you replace the valve cover gasket(s).

    Good luck!

  4. #3
    johns12 is offline Cadillac Owners Fanatic
    Automobile(s): 2004 SRX V8
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    Nov 2010
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    139

    Re: Oil in spark plug cavity

    Yes, new seals should take care of it.

  5. #4
    Sheepish is offline Cadillac Owners Fanatic
    Automobile(s): 2004 Cadillac SRX V8 AWD
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    Kalamazoo, MI
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    Re: Oil in spark plug cavity

    Is that what's going on? here are a couple pics of my n* after I changed the plugs. The first is from the passenger side, left to right is the order from the front of the car to the back. next pic is drivers side same config (I like the different spark plug btw..that one threw me a bit)
    IMAG0122_zps29df8d68.jpg
    IMAG0125_zpscbca1aab.jpg

  6. #5
    repnatl is offline Cadillac Owners Enthusiast
    Join Date
    Oct 2012
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    975
    Quote Originally Posted by Dakaty View Post
    Today I changed the plugs in my 2006 V6 and found a substantial pool of oil in 3 of the deep spark plug cavities. The Mobile 1 was very clean and fluid. It drained into the cylinders when I removed the plugs. (Lots of smoke when I fired it up the first time!!)

    All of the plugs looked fine for 86,000 miles with no oil fouling. The V6 does not leak oil on the driveway or in the engine compartment, although it uses a quart every 5000 miles!

    Anybody have any ideas what causes this?

    Thanks

    Bill
    Very common issue most dealers can't get those without buying the entire valve cover and they don't come with the valve cover gasket set.
    gmpartseast.com has them really cheap only a few dollars each also need the valve cover gaskets. If your only using a quart of oil every 5k I think you have the best designed 3.6 out of gm cause these things drink oil I've been using around 2-3 quarts every 3k miles. So you might have a good engine on your hands.also don't go by the olm recommended 15k mile oil changes there is a tsb for the dealer to reprogram the olm down to 7500 miles and constantly monitor your oil level at every other fill up to be safe.

  7. #6
    maddoggyusa is offline Cadillac Owners Member
    Join Date
    Sep 2010
    Posts
    39

    Re: Oil in spark plug cavity

    Yea this is a common issue with lots of engines when the spark plug goes thru the valve cover. The oil around the spark plug can cause you misfires.

    FYI - I imagine you had to move the intake plenum to access the spark plugs? The GM manual is wrong... you can't just "slide" the plenum forward... you have to raise it (at least I did). And when I raised the plenum on my 2004 V6, it destroyed the paper intake gaskets. I got new gaskets at Chevy dealer, and they were nice re-usuable metal gaskets.

    So just giving you a head up to check those gaskets (I didn't notice I damaged them right away, what a PIA scraping them clean)... not sure if they changed to metal gaskets for later models?

  8. #7
    repnatl is offline Cadillac Owners Enthusiast
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    Oct 2012
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    975
    Yeah luckily the stock intake gaskets are metal and rubber any aftermarket ones from Autozone or what not are paper and not worth it. If you already have the OE ones and no issues just reuse them I've had my intake off 6 times and still have the stock ones idk why they still use paper

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