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Model specific boards => Golf mk3 => Topic started by: clancy on 19 March 2015, 17:16

Title: mk3 16v rattly idle
Post by: clancy on 19 March 2015, 17:16

My car has developed a very rattly idle, seems to dissappear when the cars moving or revved but will rattle like mad when sat still

Any idea what might cause this as it's rather concerning!

Thanks

Title: Re: mk3 16v rattly idle
Post by: gasketface on 19 March 2015, 21:42

maybe you have found the marbles i lost a while back  :whistle:

Title: Re: mk3 16v rattly idle
Post by: VW BUSH on 19 March 2015, 22:15

Low oil
Low oil pressure
Worn tappets
Worn valves
Worn chain and guides
Any combination of the above

I would start with the oil level

Title: Re: mk3 16v rattly idle
Post by: boneybradley on 20 March 2015, 20:35

I would check the tensioners (cambelt and alt belt) both can rattle when the bearings go (and going by the number of pulley's & tensioners I sell they do go quite often)

Title: Re: mk3 16v rattly idle
Post by: thai-wronghorse on 20 March 2015, 21:26

As Boney says, my old valver rattled like f**k and sounded bloody awful until I replaced the tensioners and belts.

Title: Re: mk3 16v rattly idle
Post by: VW BUSH on 21 March 2015, 01:09

Gearbox mount can rattle as well