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"hissing" sound and boost is down but no leaks

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Old Mar 26, 2010, 12:40 PM
  #16  
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Originally Posted by sir monster
I wish, all I need is a mongoose to fix LOL.

If a boost leak check means running 2 bar of compressed air from the hot side of the IC to check for leaks, then yes we did a boost leak check.
I took off the intake pipe and checked the turbo impeller, found no play and spin was good. Will probably pull out the whole turbo to check the hot side. Will also try a wastegate swap.
yeah by boostleak testing off the IC, you forgot few common sources of boost leak. it could be anywhere from the turbo to the lower IC pipe. also if you say you did that boost leak from IC and didnt see any leaks in the throttle body then the shaft seal isnt your problem.
Old Mar 26, 2010, 04:38 PM
  #17  
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@ Blazing VIII /mifesto
Boost leak check from turbo inlet, j pipe and the wastegate check sounds like the next things to do before I take down the turbo.

@IrightI
airbox ARC

Thanks guys!
Old Mar 27, 2010, 11:18 AM
  #18  
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check for boost leaks tug on the intercooler piping and see if any of the metal piping comes off....also check the vacuum lines on the intake manifold
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