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Hi all, I have a zd30 the d22 and it has 367,000 km and has not given a days trouble in all that time. Without any warning whatsoever the tensioner pulley seized, it was taken to a mechanicwho changed the tensioner pulley and now it has a whining noise that is not there during idle but appears when the engine is revved up even slightly.It rises and falls with the revolution of the motor. With the serpentine belt removed the noise is still there. The mechanic say there was some play in the turbo so we replaced it to no avail. If i disconnect the egr valve connection it makes no difference.There is also no leaks from the exhaust manifold.
Any advice or idea's would be greatly appreciated.
 
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