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Timing belt walk

Posted by 98bluegsx, Nov 6, 2018

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  1. 98bluegsx

    98bluegsx Probationary Member

    1
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    Joined Feb 24, 2018
    Kutztown, Pennsylvania
    Brand new motor with brand new timing belt, tensioner, idler pulley, and auto tensioner. Belt for some reason when tuning motor over by hand walks to the outer edge of cam gear. Hangs off idler pulley about 1/8th inch. Need tips on why it’s doing this
     

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    Attached Files:

    My DSM:
    1998 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
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  2. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    3,214
    1,050
    Joined Nov 14, 2013
    Independence, Kansas
    How is the tensioner BRACKET? Is the bushing that it pivots on tight or could it be worn? We have seen a few lately with wore out bushings that allow the belt to walk some.
     
    My DSM:
    1992 Eagle Talon TSi AWD

    Street Build

    14b   automatic
    1990 Eagle Talon TSi AWD

    13.620 @ 108.460 MPH
    1990 Eagle Talon TSi AWD

    13.612 @ 107.760 MPH
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  3. 98bluegsx

    98bluegsx Probationary Member

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    Joined Feb 24, 2018
    Kutztown, Pennsylvania
    I just checked that earlier and the bushing in the arm was perfectly fine.
     
    My DSM:
    1998 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
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  4. ChessmoDSM

    ChessmoDSM Proven Member

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    Joined Apr 22, 2017
    Burlington, Vermont
    Did you use all of the helper tools when changing the belt/accessories? It looks like the tension was not set properly perhaps? Have you tried to undo and re-do just to make sure the steps were done correctly?
     
  5. 98bluegsx

    98bluegsx Probationary Member

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    Joined Feb 24, 2018
    Kutztown, Pennsylvania
    I started from the cams then the crank pulley and on but no I never tried a second time. I was worrried I wouldn’t get the timing exact again. I only used the tensioning tool on the tansioner pulling wholes to help plus using zip ties to hold the belt on the cams
     
    Last edited: Nov 6, 2018
    My DSM:
    1998 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
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  6. brian9397gsx

    brian9397gsx Proven Member

    1,067
    76
    Joined Apr 28, 2008
    sioux city, Iowa
    Check the post that the idler arm pivots on. Mine was doing the same thing recently and that post had somehow moved out from the main bracket. I hammered it back flush with the backside of the bracket and haven't had anymore issues.
     
    My DSM:
    brian9397gsx 1993 Mitsubishi Eclipse GSX

    19.80 @ 35.55 MPH
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  7. Vegas smith

    Vegas smith Proven Member

    2,193
    954
    Joined Dec 2, 2002
    Houston, Texas
    Check for the oil pan bolts right underneath the belt.
     
    My DSM:
    1993 Eagle Talon TSi AWD

    Street Build

    GT30   manual
    1992 Eagle Talon TSi AWD (sold)

    16g   manual
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  8. tametalon92

    tametalon92 Proven Member

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    Rathdrum, Idaho
    Isn't the eccentric pulley supposed to be in the other side? Iirc, it should be in the firewall side?Pin in the hydro tensioner, set eccentric to 13 foot (inch?) pounds, then release hydro tensioner pin.

    I'm thinking tension incorrect, maybe the post for the arm too, but I'd redo that and check the pulleys are in the right spot.
     
    My DSM:
    1997 Mitsubishi Eclipse Spyder GST

    Street Build

    16g   manual
    1992 Eagle Talon TSi AWD

    Street Build

      manual
    1992 Eagle Talon TSi AWD

    Street Build

    14b   manual
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  9. 98bluegsx

    98bluegsx Probationary Member

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    Joined Feb 24, 2018
    Kutztown, Pennsylvania
    I’m gonna try to restart and go over everything again then time the engine again whenever I get the chance. Just hope I can get everything lined up correctly again
     
    My DSM:
    1998 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
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  10. 98bluegsx

    98bluegsx Probationary Member

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    Joined Feb 24, 2018
    Kutztown, Pennsylvania
    Could the pulley that connects to the crank gear have anything to do with it? Could that keep it from walking at all
     
    My DSM:
    1998 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
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  11. shinzon

    shinzon Proven Member

    236
    40
    Joined Sep 11, 2006
    St. Petersburg, Florida
    in my experience doing timing belt jobs on 4g63s, the timing belt tends to ride on the outer (away from engine) side of the cam gears. Edge of the belt should be just shy of flush with the outer edge of the cams gear. Assuming you reassembled everything correctly, if it's not trying to actually walk off the gears, you're probably okay.

    Gave me pause the first time i did a belt job too, but if you notice, when done right, everything lines up perfectly with the idlers and such when the belt is at the edge of the gears.

    Something does sound off about your idler pulley though.
     
    Last edited: Nov 7, 2018
    My DSM:
    1996 Eagle Talon TSi AWD

    14b   automatic
    1997 Eagle Talon TSi AWD

    T25   automatic
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  12. tametalon92

    tametalon92 Proven Member

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    Joined Jan 5, 2012
    Rathdrum, Idaho
    Do you mean the crank sprocket, or the balancer?

    You should have to have the balancer installed to ensure the belt rides true.

    *And my previous post, disregard. Your manual tensioner pulley is on the correct side.
     
    My DSM:
    1997 Mitsubishi Eclipse Spyder GST

    Street Build

    16g   manual
    1992 Eagle Talon TSi AWD

    Street Build

      manual
    1992 Eagle Talon TSi AWD

    Street Build

    14b   manual
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  13. 98bluegsx

    98bluegsx Probationary Member

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    2
    Joined Feb 24, 2018
    Kutztown, Pennsylvania
    I didn’t try it with the balancer pulley on I will give it a try since it’s only 4 bolts. But still don’t get it hopefully it corrects it. Just concerned and don’t want something to go wrong on start up
     
    My DSM:
    1998 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
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  14. tametalon92

    tametalon92 Proven Member

    1,496
    296
    Joined Jan 5, 2012
    Rathdrum, Idaho
    Triple check all the stuff mentioned, better to have it apart now and verified vs doing it in the car or worse: a shredded belt.
     
    My DSM:
    1997 Mitsubishi Eclipse Spyder GST

    Street Build

    16g   manual
    1992 Eagle Talon TSi AWD

    Street Build

      manual
    1992 Eagle Talon TSi AWD

    Street Build

    14b   manual
    Loading...
  15. 98bluegsx

    98bluegsx Probationary Member

    1
    2
    Joined Feb 24, 2018
    Kutztown, Pennsylvania
    Yeah that’s a definite
     
    My DSM:
    1998 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
    Loading...
  16. 98bluegsx

    98bluegsx Probationary Member

    1
    2
    Joined Feb 24, 2018
    Kutztown, Pennsylvania
    Hey guys thanks for the tips on the timing belt. I finally got time today to figure it out and I found an extra washer behind the tensioner bracket. Took the one washer out and now she runs perfectly in line.
     
    My DSM:
    1998 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
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    1990TSIAWDTALON and tametalon92 like this.
  17. tametalon92

    tametalon92 Proven Member

    1,496
    296
    Joined Jan 5, 2012
    Rathdrum, Idaho
    Glad u found the issue.
     
    My DSM:
    1997 Mitsubishi Eclipse Spyder GST

    Street Build

    16g   manual
    1992 Eagle Talon TSi AWD

    Street Build

      manual
    1992 Eagle Talon TSi AWD

    Street Build

    14b   manual
    Loading...
  18. J-money

    J-money Probationary Member

    0
    0
    Joined Nov 11, 2018
    Salem, Oregon
    Im having a similar problem I made the belt flush with the edge of cam gears( the edge facing away from the engine). I then turned the engine 3 times and started to notice it walking over to the engine side and also the same happened with the balance belt. I turned it 3 more times and it seems to stay in place so i don't know if it's a big deal. Suggestions appreciated
     

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