Hi all,
Not so much an issue, as much as wanting to fiddle with the car, and get it 'ready' for a remap next weekend.
When I was driving around some switch back roads in Italy in 2012 (and Scotland last year - they're the only two times this has happened) under hard load the turbo would make a weird fluttering noise, which I read today could be the VNT. I remember a while ago pressing the VNT actuator and it being very stiff and not moving too far, so I thought I'd have a go at cleaning it, which spawns two questions.
Firstly, how far should it move? I'd guess I can get it about 10mm, but it's painful on my thumb to do, and I don't remember seeing it move off it's own accord. Worth noting, the car seems to drive fine, and is pretty consistent with the power once the turbo has spooled up.
Secondly, with something like the Mr Muscle cleaning, where do I send the foam? Is it down the pictured part of the EGR system? (That's what I'm thinking after reading guides on other engines. . . )
I'll also check the turbo vanes for movement too, and see if it's got a vortex filter or not fitted (really should have done this sooner!).
Cheers!
Joe