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Oil in spark plug tubes

Discussion in '2nd Gen Tundras (2007-2013)' started by malek, Aug 9, 2015.

  1. Aug 9, 2015 at 6:10 AM
    #1
    malek

    malek [OP] New Member

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    I have a 2012 4.6 tundra with a small issue. Maybe one of you can help me out here. I changed my spark plugs at 98.000 miles and there was oil in 2 of the spark plug tube. The dealer said it is coming from the cylinder heads but I can't get them to replace them with my warranty. They said it is normal. Has anyone else had this issue?
     
  2. Aug 9, 2015 at 7:29 AM
    #2
    T-Rex266

    T-Rex266 T-Rex Staff Member

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    I don't believe that's normal...well, anything that I've heard before. I would get a 2nd opinion.
     
  3. Aug 9, 2015 at 7:47 AM
    #3
    mdavis

    mdavis Pass me a beer.

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    Sounds like the bullshit I was given with my Silverado with 40K miles.

    1. Why is my truck burning oil? Answer: Oh its designed to burn a quart of oil every 2000 miles.
    2. Why are my spark plugs covered in oil? Answer: Oil fouled sparks, Oh that's normal.
    3. So your not going to do anything about this? No, its all normal.
    4. Drove to Toyota and traded it in.
     
    T-Rex266 and Bob like this.
  4. Aug 9, 2015 at 7:57 AM
    #4
    malek

    malek [OP] New Member

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  5. Aug 9, 2015 at 8:00 AM
    #5
    Mike

    Mike Tread lightly.

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    yep bank account is running low from it..
    Normal NO.

    sounds like your valve guides have gone bad. Warranty nope your over miles.

    Keep a eye on it if it get worst head will need to be pulled so the valve guides can be replaced.
     
  6. Aug 9, 2015 at 8:00 AM
    #6
    malek

    malek [OP] New Member

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    Fortunately I don't have that kind of problem. This is the only issue I have ever had with the tundra. It has been a great truck . I Have Had Ford AND Chevy. Both left me on the side of the road.
     
  7. Aug 9, 2015 at 8:04 AM
    #7
    malek

    malek [OP] New Member

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    My father in law mentioned valve guides. I thought the valve cover had a seal that might have been bad but toyota said it doesn't have one. They said it has a metal seal that is pressed fit into the heads.
    Thanks
     
  8. Aug 9, 2015 at 10:47 AM
    #8
    garnaz

    garnaz New Member

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    Tube seals on valve cover leaking.
     
  9. Aug 9, 2015 at 12:13 PM
    #9
    Mike

    Mike Tread lightly.

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    yep bank account is running low from it..
    I can tell i need more coke cola in the morning on my only day off. UGH

    I was thinking you had oil on the inside on engine piston side. ( my fault) .. You have oil on the outside of the plug. garnaz is correct your tube seals are bad.
     
  10. Aug 9, 2015 at 6:20 PM
    #10
    bobeast

    bobeast really old member

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    Hollister, CA
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    - Bull Bar - LED Bunny Burners - AMP retractable running boards - Headlight leveling retrofit - P3 Brake Controller - 60% rear seat delete - relocation of Sub to rear wall - Bilstein 5100 x4, top setting with 2 shims per side - Coach builder +2 rear shackles w/carrier bearing drop - Firestone Air bags - on-board compressor with auto-leveling - Dual Undercover Swing Boxes. - P285/65/R20 (34.6") BFG TA KO2's - TRD Front skid plate - Pop & Lock Tailgate lock - Remote Tailgate mod - LED Headlights - Nav Bypass - iPhone integration - Serius/XM retrofit - 25% front tint - Bizon electric tonneau cover - Power folding tow mirror upgrade - 2010+ leveling Headlight mod - Auto-fold mirror mod. - one-touch lane changer mod - Flash to open garage opener mod - Rigid H/L fog light upgrade - Pushbutton / Remote start mod.
    What's normal is dealers telling customers that everything is normal, in hopes they will just go away.
     
  11. Aug 20, 2015 at 4:02 PM
    #11
    NCBMack

    NCBMack New Member

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    About 6 months ago I finally had my plugs changed in my 2012 4.6L at 200K miles. Same issue of oil in the tubes. my buddy works at the dealer so I asked him how long they thought oil had been in there. He said probably around 100K miles. I didn't fix it cause it didn't seem like it was really hurting anything. Since then I have another 30K miles and zero issue and no leaks or missing oil.
     
  12. Aug 20, 2015 at 7:15 PM
    #12
    LOTSOFTOYS

    LOTSOFTOYS Toyota Whisperer

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    It's probably the tube seals in the valve cover like someone else said.... not hard to replace. Grab a couple cover gaskets and 8 tube seals and make a morning of it;)
     
    NCBMack likes this.

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