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Is this whistling turbo sound normal?

Turbo whistles when accelerating hard, but not when you are more gentle. Does this indicate a fault or is it normal

Asked on 25 September 2012 by Andypandy21

Answered by Honest John
Some turbos always whistle. But if this is a new sound it could indicate turbo bearings starting to fail. Make sure all the oilways to the turbo bearing are clear and not restricted by carbon deposits.

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