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Thread: timing belt keeps slipping off

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    Default timing belt keeps slipping off

    I have a '98 zx2, timing belt slipped off a little while ago. Thank god for the non-interference engine. Anyway, I fixed it, and a couple of weeks later it slipped right off again. Everything is tight, tensioner was exactly as tight as it said (1/4" of give). The belt looks to have "walked" off the gears away from the engine (picture attached). What can I do to keep this from happening again?0708101549.jpg

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    Read the how-to in our Knowledge Base.

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    ^^^Troof, also it may be that you have the two piece crank gear and its waiting your timing belt.


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    How old are your pulleys? Also, do you have a 1 or 2 piece crank gear?
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    You probably should get new pulleys.
    Bad pulleys cause a belt to go bad, not the other way around.

    WOW! That belt looks awful skinny! Are you sure it's the right one?

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    I just replaced my timing belt and it is just as wide as the cam gears im not sure you have the right belt.. It almost looks like a serp. belt with the cog teeth on it

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    X2 your belt is way too skinny. The place u bought it from probably gave u a serpentine belt of some sort. That could cause it to slide off, it could be too big and when u rev it up it vibrates off of the gears. Might wanna check that
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    that timing belt is fuxed. Half of the belt looks like it has been chewed off before it walked off. You should replace that belt again. When you replace the belt double check your pulleys (especially the lower one) to make sure that the belt is routed and seating correctly.
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    Ugh guys I hope you dont think thats how the belt is supposed to look, that one was chewed to hell after it walked off the cam gears. Sucks big time when that happens.



    -D

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    Thanks 99, that was the "after" picture - after it walked off the gears and got chewed up. Put new pulleys on the first time I replaced it. Don't know about the crank gear. It's a '98, which would suggest a 2-piece. About to order a 1-piece. Hopefully that'll fix it?

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    You don't use belt deflection to set tension. You use the index mark on the tab. Are you sure you used the index mark and that the tab was seated in the back plate? Did you neutral the cam gears on the new belt?

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    Quote Originally Posted by ZX2Fast View Post
    You don't use belt deflection to set tension. You use the index mark on the tab. Are you sure you used the index mark and that the tab was seated in the back plate? Did you neutral the cam gears on the new belt?
    lol at truth (troof)

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    "After you get this done you need to check the belt deflection. Just push down in the center of the belt (between the cam gears) and see if it travels downward more then a 1/4 inch. If not, then the tension is set fine." (from timing belt replacement guide on this site)

    That's what I was working from. Am I confusing apples with oranges? Is belt deflection different from adjusting the tensioner?

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    Quote Originally Posted by TheFreshman View Post
    "After you get this done you need to check the belt deflection. Just push down in the center of the belt (between the cam gears) and see if it travels downward more then a 1/4 inch. If not, then the tension is set fine." (from timing belt replacement guide on this site)

    That's what I was working from. Am I confusing apples with oranges? Is belt deflection different from adjusting the tensioner?
    Yes, these are different things. The tensioner has a slot for an Allen key and a 10mm bolt. Loosen the 10mm bolt a little and rotate the tensioner with an Allen key until the two marks line up. Tighten the 10mm bolt back down, double check the alignment, repeat if necessary.

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