1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

One Cylinder Head Dirty (Internally)

Discussion in '1st Gen Tundras (2000-2006)' started by JesterSmith, May 6, 2018.

  1. May 6, 2018 at 10:57 AM
    #1
    JesterSmith

    JesterSmith [OP] New Member

    Joined:
    Mar 8, 2018
    Member:
    #13409
    Messages:
    14
    Gender:
    Male
    First Name:
    JesterSmith
    Vehicle:
    2002 Toyota Tundra Limited 4.7L
    2.5" Rancho Quicklift, 18" RTX Steppe Off Road wheels, 33" AT tires, Pacesetter headers and Dynomax performance exhaust.
    Hi all,

    I picked up a used 4.7L 2UZfe engine from the wreckers with 150K. I noticed the driver's side valve cover bolts weren't torqued. After removing the valve covers for paint I see internally one really clean and shiny passenger side cylinder, and one dirty and dull driver's side cylinder (overall the colour is just darker and dull for all the components and looks similar to my old engine with 300k).

    The dirty driver's side does show signs of failed spark plug tube gaskets with some build up of oily dirt around and below where the gaskets sit (two rear tubes).

    Would the failed spark park tube gaskets cause the inside of the cylinder to look more aged as compared to the clean passenger side (where I don't see failed tube gaskets). Has anyone ever seen something similar before?

    Kinda worried I have an engine with one old head bolted on but it seems so unlikely that this would be the case.

    Appreciate it,

    jestersmith
     
  2. May 6, 2018 at 11:18 AM
    #2
    mudslinger79

    mudslinger79 New Member

    Joined:
    Dec 30, 2017
    Member:
    #11852
    Messages:
    508
    Gender:
    Male
    First Name:
    Christopher
    Williamsburg, Va
    Vehicle:
    2006 Double Cab, Phantom Grey Pearl
    Leveled. 16x8 Pacer 164 wrapped in 295-75-16 General AT2. Flowmaster exhaust. K&N Cold air intake.
    Could you provide pics?
     
  3. May 6, 2018 at 12:06 PM
    #3
    JesterSmith

    JesterSmith [OP] New Member

    Joined:
    Mar 8, 2018
    Member:
    #13409
    Messages:
    14
    Gender:
    Male
    First Name:
    JesterSmith
    Vehicle:
    2002 Toyota Tundra Limited 4.7L
    2.5" Rancho Quicklift, 18" RTX Steppe Off Road wheels, 33" AT tires, Pacesetter headers and Dynomax performance exhaust.
    Sure thx, here's the driver side:

    20180506_125043.jpg 20180506_125110.jpg
     
  4. May 6, 2018 at 12:15 PM
    #4
    JesterSmith

    JesterSmith [OP] New Member

    Joined:
    Mar 8, 2018
    Member:
    #13409
    Messages:
    14
    Gender:
    Male
    First Name:
    JesterSmith
    Vehicle:
    2002 Toyota Tundra Limited 4.7L
    2.5" Rancho Quicklift, 18" RTX Steppe Off Road wheels, 33" AT tires, Pacesetter headers and Dynomax performance exhaust.
    ... and here is the passenger:

    20180506_125200.jpg 20180506_125730.jpg
     
  5. Aug 10, 2018 at 2:50 PM
    #5
    Professional Hand Model

    Professional Hand Model Fred Brookes

    Joined:
    Apr 29, 2018
    Member:
    #14878
    Messages:
    1,194
    Gender:
    Male
    Vehicle:
    2002 Tundra SR5 4WD
    Aluminum sideboxes
    Following up on this one Jester. What did you end up doing?
     
  6. Aug 10, 2018 at 3:10 PM
    #6
    JesterSmith

    JesterSmith [OP] New Member

    Joined:
    Mar 8, 2018
    Member:
    #13409
    Messages:
    14
    Gender:
    Male
    First Name:
    JesterSmith
    Vehicle:
    2002 Toyota Tundra Limited 4.7L
    2.5" Rancho Quicklift, 18" RTX Steppe Off Road wheels, 33" AT tires, Pacesetter headers and Dynomax performance exhaust.
    I emailed the wrecking company that I bought it from and talked to a head rebuilder / machine shop about it. In the end I decided to trust the compression results and threw it in. It fired up immediately and sounded great but I had a couple other issues to sort out including cleaning the MAF sensor to clear some codes, PCV valve, and I discovered that the previous owner had farm gas in the tank. Now that I'm past all that -- it runs awesome. Now I'm on to the body work.

    (Also, of course -- new spark plug tube and valve cover gaskets.)
     
    Last edited: Aug 10, 2018
  7. Aug 19, 2018 at 6:38 AM
    #7
    Professional Hand Model

    Professional Hand Model Fred Brookes

    Joined:
    Apr 29, 2018
    Member:
    #14878
    Messages:
    1,194
    Gender:
    Male
    Vehicle:
    2002 Tundra SR5 4WD
    Aluminum sideboxes
    Thanks for the follow up. Upon doing the valve covers last week, discovered a similar situation as yours with the passenger side very clean and drivers side dirtied up (not nearly as bad as yours but still worse than passenger side).

    I think the problem may come from clogged PCV Valve and also the port in which it sits. I had to really blast the cover orifices when the cover was off. I’ll be making the PVC/port cleaning a regular maintenance thing from now on.
    Pass side with cleaned cover and new gasket. Tubes look good. Drivers side done next day was worse (tired that day no pics).
    upload_2018-8-19_9-35-39.jpg
     
  8. Aug 21, 2018 at 7:16 AM
    #8
    JesterSmith

    JesterSmith [OP] New Member

    Joined:
    Mar 8, 2018
    Member:
    #13409
    Messages:
    14
    Gender:
    Male
    First Name:
    JesterSmith
    Vehicle:
    2002 Toyota Tundra Limited 4.7L
    2.5" Rancho Quicklift, 18" RTX Steppe Off Road wheels, 33" AT tires, Pacesetter headers and Dynomax performance exhaust.
    Yeah, I think you are right and the PCV valve makes the most sense. Even the machinist I talked to wondered if there might be a ventilation issue.
     

Products Discussed in

To Top