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Discussion Starter · #1 ·
Hi all,

Had the window down today for what feels like first time in eternity however I noticed that when I accelerate I can hear what Ithink is the turbo whistling. I have a 2004 3.0d X5 sport.

Any ideas if this is and should it whistle when I accelerate??????

Cheers

J:thumbup:
 

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A whistle sound on a diesel turbo is not normal. If you are hearing excessive noise from the turbo then is likely to be an air leak. A good way to find air leaks is to get a spray bottle with a fine mist spray. Run the engine and spray around all the connections one at a time with water. You will hear the air sucking or blowing out or a change in the way the engine runs . And no the water will not damage the engine or turbo.
 
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