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Model specific boards => Golf mk2 => Topic started by: sparkplug on 31 May 2009, 16:22

Title: timing belt screaching ?
Post by: sparkplug on 31 May 2009, 16:22

 :angry: doing my head in this is..
the belt on my 1986 8v GTI is tensioned right ..
 ie 90 degree turn between thumb an finger at the longest section
yet when the car has been running for a short while it screaches..
must be it getting hot suppose

any ideas ?

have tried a bit more , an less tension on the belt an yet it still does it !!! :angry: :angry:

Title: Re: timing belt screaching ?
Post by: danny_p on 31 May 2009, 17:10

tensioner bearings are failing change it quickly.

Title: Re: timing belt screaching ?
Post by: sparkplug on 31 May 2009, 17:16

 :shocked:
bugger  was changed a little while back when i did the timing belt  (but a GSF one)
are they poor quality ?
is the genuine vw one any better ?

Title: Re: timing belt screaching ?
Post by: sparkplug on 31 May 2009, 17:45

mmm just taken the tensioner off , the bearing spins nice an free an no noise so seems OK ?

still doing my head in...

Title: Re: timing belt screaching ?
Post by: Tubb on 31 May 2009, 17:52

is it definately the cambelt and not the aux belt?

Title: Re: timing belt screaching ?
Post by: sparkplug on 31 May 2009, 17:58

good point , will take it off tommorrow an see , worth a go
i may be barkin up the wrong tree  :undecided:

Title: Re: timing belt screaching ?
Post by: wil0 on 31 May 2009, 18:57

Yeah, sounds like it to me. does it stop when you rev it up? see if the fan belt is slack too...
mine is making a whining sound too, replaced the tensioner yesterday, i think its the cam bearing/seal in the rocker cover/head...

Title: Re: timing belt screaching ?
Post by: danny_p on 31 May 2009, 19:55

whineing is normaly overtight belt

Title: Re: timing belt screaching ?
Post by: wil0 on 01 June 2009, 20:01

mine whines loads, but the cam belt is at the correct tension, as if i slacken it off a little, it flapps about. i thought it may be the head/rocker cover cam shaft seal/bearing?

Title: Re: timing belt screaching ?
Post by: danny_p on 01 June 2009, 20:52

bearings dont do whineing at least not for long,   cam bearings are same as big ends and mains just the shells arn't removable

Title: Re: timing belt screaching ?
Post by: wil0 on 01 June 2009, 21:11

yeah, the roller bearings for the cams looked fine when i did the cam chain so im confused. Its strange that it only does it when i tension the belt correctly, its a new tensioner, and it did it with the old one too. it sounds like its coming from the top of the engine, but i cant be sure. i have used a special listening device (a coal chisel), but cant really find the noise. When i drive the car, i can hear it as a whine.

Title: Re: timing belt screaching ?
Post by: DOA on 02 June 2009, 12:51

You dont have roller bearings for the cams and have either of you checked to see if theres any evidence of the belt rubbing on the belt cover as that sounds like the more likely problem if its not the tension or the tensioner.