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

Mid timing belt job - oil leaks? What to replace while in here

Discussion in '1st Gen Tundras (2000-2006)' started by inv3ctiv3, Aug 2, 2025.

  1. Aug 2, 2025 at 9:42 PM
    #1
    inv3ctiv3

    inv3ctiv3 [OP] New Member

    Joined:
    Oct 10, 2023
    Member:
    #105214
    Messages:
    102
    Gender:
    Male
    First Name:
    Jim Bob
    I’ve read the stickies and other threads I don’t have any questions about the timing belt job itself. My question is around common oil leaks on the 4.7 as my motor has a lot of build up and I wanna replace anything inner while it’s apart that I should. I got a crankshaft seal but that’s it so far. Looks like a lot of build up is around there and the oil filter housing.
    IMG_7065.jpg IMG_7067.jpg IMG_7073.jpg IMG_7071.jpg
     
    G_unit3000 likes this.
  2. Aug 2, 2025 at 9:52 PM
    #2
    jerryallday

    jerryallday New Member

    Joined:
    Jan 4, 2021
    Member:
    #57084
    Messages:
    1,078
    Gender:
    Male
    First Name:
    Jerry
    Pasadena, Ca
    Vehicle:
    2006 DC SR5 V8 Grey
    6112 lift, Camburg UCA, 17 methods on 33inch Ko2 tires
    Last edited: Aug 3, 2025
    G_unit3000 and inv3ctiv3[OP] like this.
  3. Aug 2, 2025 at 10:11 PM
    #3
    inv3ctiv3

    inv3ctiv3 [OP] New Member

    Joined:
    Oct 10, 2023
    Member:
    #105214
    Messages:
    102
    Gender:
    Male
    First Name:
    Jim Bob
    jerryallday[QUOTED] likes this.
  4. Aug 2, 2025 at 10:40 PM
    #4
    Bought2Pull

    Bought2Pull New Member

    Joined:
    Jul 26, 2024
    Member:
    #120430
    Messages:
    1,014
    Gender:
    Male
    First Name:
    Greg
    WV
    Vehicle:
    2006 Tundra 4 door
    Read on here to also do tensioner, pulley (is there more than one?), and radiator. I had a stealership do all that for me. Wallet much lighter afterwards....
     
  5. Aug 3, 2025 at 7:52 AM
    #5
    shifty`

    shifty` Earth acid cleanses me, cleanses me clean

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    31,413
    Gender:
    Male
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    None of that looks fresh to me? Except for that's above the crank pulley/HB, which Jerry nailed already.

    You should really consider replacing both of your PCV hoses, and do your PCV valve if it hasn't been changed in the last 40k-50k miles.
     
  6. Aug 3, 2025 at 10:20 AM
    #6
    bfunke

    bfunke Tundra Curmudgeon

    Joined:
    Oct 13, 2019
    Member:
    #37321
    Messages:
    2,686
    Gender:
    Male
    First Name:
    Bryan
    South Carolina
    Vehicle:
    2018 SR-5 CM 5.7, 2000 SR-5 AC 4.7L
    In retrospect, I would have cleaned the engine before doing the TB so you can see if anything is actively leaking.
     
  7. Aug 3, 2025 at 11:55 AM
    #7
    inv3ctiv3

    inv3ctiv3 [OP] New Member

    Joined:
    Oct 10, 2023
    Member:
    #105214
    Messages:
    102
    Gender:
    Male
    First Name:
    Jim Bob
    yea that’s why I included that photo I need to order that stuff up. Also doing a new radiator and all the tensioners etc just was curious about oil seals I may be forgetting
     
    shifty`[QUOTED] likes this.
  8. Aug 3, 2025 at 1:34 PM
    #8
    shifty`

    shifty` Earth acid cleanses me, cleanses me clean

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    31,413
    Gender:
    Male
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    I mean, 2006 is VVTi, so doing the cam seals is a bitch. Not sure about crank seal, haven't looked into it on my 2006.
     
  9. Aug 3, 2025 at 1:37 PM
    #9
    bfunke

    bfunke Tundra Curmudgeon

    Joined:
    Oct 13, 2019
    Member:
    #37321
    Messages:
    2,686
    Gender:
    Male
    First Name:
    Bryan
    South Carolina
    Vehicle:
    2018 SR-5 CM 5.7, 2000 SR-5 AC 4.7L
    Crank seal is easy. If it’s leaking do it. Either use a seal puller of a small screw to pull it so you don’t scratch the crank or the seating surface.
     

Products Discussed in

To Top