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Timing belt broke

Discussion in '1st Gen. Tacomas (1995-2004)' started by Hotdog7, Oct 16, 2023.

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  1. Oct 16, 2023 at 6:00 PM
    #1
    Hotdog7

    #1
    Hotdog7 [OP] Well-Known Member

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    Toytec 2.5-3" lift 2010 rims wheel spacers tundra brake upgrade
    I've not looked yet but I may have broken timing belt! I guess I need to have crank on 0 but should I check where piston is on top how do I do this?3.4
     
    Hotdog7, Oct 16, 2023
    #1
  2. Oct 16, 2023 at 8:19 PM
    #2
    Dm93

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    Dm93 Test Don't Guess

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    If the timing mark is lined up on the crank then the #1 piston should be at TDC.
    Pretty easy to pull the upper timing cover back enough to see if the belt is broke or not.
    The 3.4L is non-interference so the likelihood of valve damage from a broken timing belt is minimal.
     
    Dm93, Oct 16, 2023
    #2
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  3. Oct 16, 2023 at 8:23 PM
    #3
    Dalandser

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    Dalandser ¡Me Gustan Las Tacos-mas!

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    Dalandser, Oct 16, 2023
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  4. Oct 16, 2023 at 8:31 PM
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    cruxofthebisquit

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    cruxofthebisquit Well-Known Member

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    pull a spark plug and check if it has any compression. No sweating of any line up marks. Now if it does..start tracking.
     
    cruxofthebisquit, Oct 16, 2023
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  5. Oct 17, 2023 at 4:14 PM
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    Hotdog7

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    Hotdog7 [OP] Well-Known Member

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    Just died on interstate Heard a little pop then lost all power made it to shoulder TG
     
    Hotdog7, Oct 17, 2023
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  6. Oct 18, 2023 at 1:40 AM
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    JustADriver

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    JustADriver Well-Known Member

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    How many miles? It would be good to know how many it takes to break it.
     
    JustADriver, Oct 18, 2023
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  7. Oct 18, 2023 at 4:19 AM
    #7
    Hotdog7

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    Hotdog7 [OP] Well-Known Member

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    I don't have any idea of milage on motor 330000 on truck could be motor too
     
    Hotdog7, Oct 18, 2023
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  8. Oct 18, 2023 at 6:25 AM
    #8
    02hilux

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    02hilux What do you mean there’s no road, I’m here

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    Remove a few bolts from the upper timing cover and check timing belt or pull a spark plug out and put the oil dip stick in it to check if the dip stick move up and down when cranking. If the dip stick down move during crank, more likely the timing belt snap.
     
    02hilux, Oct 18, 2023
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  9. Oct 18, 2023 at 6:06 PM
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    Hotdog7

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    Hotdog7 [OP] Well-Known Member

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    This doesn't make sense to me i figured if belt broke only the valves won't move during crank
     
    Hotdog7, Oct 18, 2023
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  10. Oct 18, 2023 at 6:08 PM
    #10
    Dm93

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    Dm93 Test Don't Guess

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    What does the engine sound like cranking? Does it sound like it's cranking normally or just freewheeling?
     
    Dm93, Oct 18, 2023
    #10
  11. Oct 18, 2023 at 6:14 PM
    #11
    02hilux

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    02hilux What do you mean there’s no road, I’m here

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    **does not** correction
     
    02hilux, Oct 18, 2023
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  12. Oct 18, 2023 at 6:26 PM
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    Superdave1.0

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    Superdave1.0 Grandma Dave

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    X5 on pulling upper timing cover to inspect. Will answer your question.
     
    Superdave1.0, Oct 18, 2023
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  13. Oct 19, 2023 at 4:27 AM
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    Hotdog7

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    Hotdog7 [OP] Well-Known Member

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    Not sure as it broke on interstate couldn't hear anything I'll see when I try again
     
    Hotdog7, Oct 19, 2023
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  14. Oct 20, 2023 at 6:54 AM
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    jacobrippey

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    jacobrippey It’s always Taco Tuesday Instagram #rippstik

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    Make sure you don't have any viewing windows in the side of the block...
     
    jacobrippey, Oct 20, 2023
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  15. Oct 20, 2023 at 2:06 PM
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    Hotdog7

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    Hotdog7 [OP] Well-Known Member

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    Pulled top of the timing belt cover back belt is broken! Now I have to see how to get crank in correct time I guess I have to check see when on 0 tdc #1 cly is up to top?
     
    Hotdog7, Oct 20, 2023
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  16. Oct 24, 2023 at 7:53 AM
    #16
    Hotdog7

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    Hotdog7 [OP] Well-Known Member

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    I'm told as long as crank is on 0 the #1 piston at tdc. Is this correct?
     
    Hotdog7, Oct 24, 2023
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  17. Oct 24, 2023 at 7:56 AM
    #17
    Superdave1.0

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    Superdave1.0 Grandma Dave

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    Yes
     
    Superdave1.0, Oct 24, 2023
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  18. Oct 24, 2023 at 5:35 PM
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    Hotdog7

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    Hotdog7 [OP] Well-Known Member

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    Thanks
     
    Hotdog7, Oct 24, 2023
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  19. Oct 25, 2023 at 2:01 AM
    #19
    457taco

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    457taco Active Member

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    I just done this to mine. Don’t forget to line the cams upon the marks as well. That crankshaft bolt is tight. I had to am the flywheel to break it loose.
     
    457taco, Oct 25, 2023
    #19
  20. Oct 25, 2023 at 6:34 PM
    #20
    Hotdog7

    #20
    Hotdog7 [OP] Well-Known Member

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    I don't understand this what is am flywheel mean? How is this done? I was going to make something to bolt on pulley. I was also going to remove radiator and see if my impact would fit
     
    Hotdog7, Oct 25, 2023
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