Quote:
Originally Posted by Diesel911
A leak at the Intake Manfold can cause a wine also.
With the Engine Cold spray down the manifolds with a mix of Dawn Dish Soap and water (mixed so it forms bubbles that you can blow).
Start the Engine and speed the Engine above 2,500 rpms (so the Turbo starts to give boost pressure. and if there is a leak bubbles will form from the Intake Manifold or Exhaust pressure.
Give some Kids the extra bubble mix and who ever does you Dishes the rest of the Dawn.
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2500 or not, without load, doubt the turbo would give any boost.
May need to power brake the thing.
A whistle is common on w123 cars.
What id check for is boost pressure. Pull a sample off the over post protection going to the alda, on the manifold side. Should optimally see 10.7 psi under hard acceleration, full load.