Wastegate rattle?

[AJP]

Just lately I've been hearing a slight metallic rattle on light throttle coming onto boost. Imagine a tiny bit of gravel or small ball bearing being shaken about inside a tin can, that's probably the closest description I can give! It's not very loud, but loud enough for me to hear it every time now I'm listening for it.

I've done a good search and one thing that keeps coming up is a loose wastegate rod. What's the best way of diagnosing this? And what's the cure if it does turn out to be the wastegate?

I'd imagine it's not the sort of thing that throws a fault code. Just hope it's nothing serious, whatever it is! I do plan on going k04/k03 hybrid at some point, but I'd like to get this sorted in the meantime while I'm on the k03.

[Paradox1]

I get the same rattle. mine is only on idle though. mine is definitely wastegate rattle but its quite common on TSI engines.

[AJP]

I get the same rattle. mine is only on idle though. mine is definitely wastegate rattle but its quite common on TSI engines.

Is it as simple a job as tightening it up and it's sorted?

[Paradox1]

havent really had a look tbh.

I think it either needs tightening or its knocking on the heatshield, maybe bending the heatshield slightly may help in my case.
Worth checking if yours as come loose first though

[AJP]

Ok mate. It's going in for brakes soon so I'll get it looked at while it's there.

[pudding]

Need one of these do you think? https://www.ecstuning.com/b-genuine-volkswagen-audi-parts/wastegate-actuator-rod-rattle-clip/06j145220a/

More common on the MK6, but not unheard of on MK5s also.  Wiggle the actuator rod and if it's loose and wobbly, that clip should sort the noise.

[rich83]

That won't fit the mk5 turbo.

I had this issue for about 6 months. I then had an updated Revo map put on and it fixed it. Weird.

[AJP]

That won't fit the mk5 turbo.

I had this issue for about 6 months. I then had an updated Revo map put on and it fixed it. Weird.

Did it do it with both a hot and cold engine Rich, or just when cold?

I don't know if what I'm experiencing is wastegate rattle (although it's the closest match I can attribute to the symptoms) or something else, possibly related to my misfire issue.

[rich83]

Can't remember. Was 2/3 years ago. It was annoying as hell though

[AJP]

Can't remember. Was 2/3 years ago. It was annoying as hell though

How would you describe the sound?

I expect as a fellow musician you'll be able to describe it incredibly accurately

[rich83]