Quote:
Originally Posted by rayruner
Actually the whistle started after i plumbed vacuum into thr crankcase, the whistle is under the valve cover. thanks
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OK, so why would you plumb vacuum into the crankcase???
Why would you mess with the vacuum/PCV system at all?
If it is hacking into place a custom catch-can system, you obviously did it wrong. Buy one of the solutions that is known to work.
To ask why something you did wrong is making noise does not make sense. Undo whatever you did, plain and simple.