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AudiA4ktex

AudiA4ktex 11/3/2012

2007 Audi A4 Quattro Cabriolet 4 Cyl 2.00L

Engine

Smoke from exhaust when turbo spools, what's going on?

When the turbo is spooling in third gear around 3k to 4.5k RPM, I am often getting a plume of gray/black smoke out the exhaust. This is accompanied by a ratcheting clicking noise...leads me to click turbo, but I don't know. It's in the shop now receiving diagnostics. Any opinions to what's the cause of this?

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