MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: KcajGnowk on March 17, 2026, 09:49:17 am

Title: Engine rattle
Post by: KcajGnowk on March 17, 2026, 09:49:17 am

Hi guys, first post but wondering if anyone is able to help as my 58 plate MK5 golf gti has developed an unpleasant engine rattle. It seems to happen when it's warmed up, and doesn't seem to be a pattern to it. There's no engine warning lights, and as far as I can tell it drives fine.  I have taken it to one garage so far and they couldn't identify it.
I have a specialist I've used before for servicing but they want to charge £160(?!) for one hour diagnostic.
I have attached a short video, which hopefully captures some of the sound. Any insight will be truly appreciated.

Title: Re: Engine rattle
Post by: JamieSmeatonVW on March 18, 2026, 11:00:38 am

Sounds like either a failing duelmass at the worse case or Aux belt tensioner and or Idler pully bearing failing, Any noise when the engine is being switched off?

Title: Re: Engine rattle
Post by: KcajGnowk on March 18, 2026, 04:49:35 pm

There's no unusual sounds when switching off.

The rattle sound doesn't start straight away on on start up, it seems to ease in as it warms up.

Title: Re: Engine rattle
Post by: GVK on March 19, 2026, 09:14:47 pm

Remember when my ex gf had a new Edition 30 her car had a similar noise it was one of the rollers on the cambelt.

I would remove the aux belt and see if noise stops.