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Re: whistling sound (archive)

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Posted by Mark M on September 18, 2000 at 11:49:18:

In Reply to: whistling sound posted by eric on September 16, 2000 at 17:48:04:

my whistle was air leak related. Real easy to fix too. the intake venturies are 2 piece and the 4 o-rings that seal the two sometimes rips causing a whistle at high revs as un-metered air sucks by and into the engine.

Notice how the venturies exit the intake plenum and enter the cylinder head. Then look at all the chrome cap nuts that hold both halves of the venturies together, the driver's side half and passenger side half are bolted together with about 10 or so of these cap nuts. Take them all out and then undo the two cap nuts holding the throttle and cruise linkage on the plenum. Next unbolt the one nut under the plenum that is attached to the plenum support bracket. You may need to remove some hoses too.

Its a pretty straight forward job. take your time, then after you get it off look at the rubber o-rings in each venturie for rips or irregularities. probably replace all 4 as they are cheap. then reinstall. I can do the job in about 25 min total, a first timer can do it in about an hour.

Oh, these are not the same thing as the intake gaskets. The intake gaskets are against the head and too much $ for what they are.

Good Luck,

Mark M

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