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1.8 TDCi Turbo whistle

1K views 1 reply 2 participants last post by  Mazo 
#1 ·
I am getting a medium pitched whistle linked to engine speed that sounds incredibly loud, even with the windows closed. Bizzarely, it doesn't happen every time I accelerate, I'll get it for a few minutes, then it'll disappear. I don't get it at constant speed, even on the motorway. My mpg hasn't changed and I'm not getting black smoke out the back. I've looked in the engine bay and there's no obvious signs of a split hose. I had a stainless exhaust put on a year ago, so I don't think (and it doesn't sound like) it's a hole in the exhaust. Does the mk4 1.8 TDCi have a similar problem to the 2.0 mk3 engine with split pipes, or could it be a wastegate problem (guessing here - I don't know much about turbos)

Thanks in advance for any help !
 
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