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Model specific boards => Golf mk4 => Topic started by: spaced4130 on 13 March 2012, 13:55

Title: AGU timing belt loose?
Post by: spaced4130 on 13 March 2012, 13:55
Hi All,

I got my timing belt and water pump changed in December last year but stupidly didn't get the hydraulic tensioner/dampener replaced at the same time! The last couple of days I've noticed a rattling noise coming from the engine bay at low revs, it doesn't happen all the time but does happen when stationary as well, At first I thought I was a lose heat shield or something but I cant see anything lose. After a search I found a couple of posts on other forums about the dampener being the problem so took the timing belt cover off to have a look and it seems a bit loose, I took a video of how loose it was, do you guys think this is normal:-

http://www.youtube.com/watch?v=uEr8t6vqOgk&feature=youtu.be

It wasn't making the rattling noise when I started the car up with the timing belt cover off either so I'm not really sure what's going on or if the belt should be that loose.

Thanks in advance for your help

Title: Re: AGU timing belt loose?
Post by: Big Tone on 13 March 2012, 14:13
Can you twist the belt through 90degrees with sensible finger pressure? Or more than 90degrees?
Title: Re: AGU timing belt loose?
Post by: spaced4130 on 13 March 2012, 14:16
I think I probably could to be honest but not entirely sure so I will have a look a bit later and get back to you.
Title: Re: AGU timing belt loose?
Post by: Big Tone on 13 March 2012, 14:22
Just watched the vid, slack as fook!

How long you driven like that?
Title: Re: AGU timing belt loose?
Post by: spaced4130 on 13 March 2012, 14:31
I'm not sure how long its been like that, as I say I got the belt and water pump done in December. Its only started making the rattling noise in the last few days so I assume that's the tensioner bouncing on the pulley then?

Do you think I shouldn't drive it until I've got it sorted? I fell like a complete twit for not getting the tensioner done at the same time now  :cry:
Title: Re: AGU timing belt loose?
Post by: Big Tone on 13 March 2012, 14:36
I wouldn't be driving it, id be hoping I aint broke owt!
Title: Re: AGU timing belt loose?
Post by: spaced4130 on 13 March 2012, 14:41
looks like I'll be getting the train home then
Title: Re: AGU timing belt loose?
Post by: Big Tone on 13 March 2012, 14:44
Someone please confirm, our take a longer better video to be sure. Dont want to give you duff advice.

Could the belt jump a tooth? Can you reach the idler pulley? You should be able to tell if its loose.
Title: Re: AGU timing belt loose?
Post by: GunnerCP on 13 March 2012, 14:45
Someone please confirm, our take a longer better video to be sure. Dont want to give you duff advice.

Could the belt jump a tooth?
i'm no expert either but looks far from normal/safe and I wouldnt advise driving it either!
Title: Re: AGU timing belt loose?
Post by: Dave_IOW on 13 March 2012, 17:57
I dont think its that bad???

Do bloody well to skip a tooth id have thought??  :huh:
Title: Re: AGU timing belt loose?
Post by: spaced4130 on 13 March 2012, 20:01
I had another look at it, it seems a lot tighter than the last time I looked at it, maybe all the slack was on just one side or something. I felt the pulley and it doesn't feel loose, I have also worked out that the rattling was the heat shield under the car after having a bit more of a poke around so my mistake. Do you reckon the belt is alright then Dave??
Title: Re: AGU timing belt loose?
Post by: Big Tone on 13 March 2012, 20:12
There is a slack side but if the pulley is tight, you can't twist the belt through more than 90deg, and the rattling was definatley the heat shield, id say the belt is ok, you would know about it if it wasn't.

Still say that it Looks a bit slack on that vid, just the way the lower part of the belt moves but you can't tell how much force you are applying.

Glad its not the belt snd sorry for freaking you out, my bad.

I would certainty be replacing that tensioner though.
Title: Re: AGU timing belt loose?
Post by: Dave_IOW on 13 March 2012, 20:39
One way to find out!
Title: Re: AGU timing belt loose?
Post by: Big Tone on 13 March 2012, 20:47
One way to find out!

Lol, if its the rattling he ws concerned about snd he has found it, then hopefully everything is fine.