This weekend I removed my intake manifold to clean and reinstalled it with new gaskets. After getting it started, I now have a high pitched squealing noise that's coming somewhere from the intake mani. It's so high pitched I can't pinpoint the exact location. When you give it gas it seems to go away, the truck runs and drives fine. anyone have this experience.

 

Can't say that I have.

Does it sound like air or something metal?

 

Does it sound like a newer Chevy truck's weather stripping air whine?

 

its a leak, the gasket must not have sealed all the way. did u use gasket glue? (rtv, silicone)

 

ya you've probably just got a small leak around the gasket. check it one more time to ensure that it's sealed good.

 

Ok i'll give that a shot, I did use rtv silicone but only around the water ports.

 

Not sure what that sounds like but quite possibly yes.

 

Use a spray bottle of water (fine mist) or carb cleaner.. spray around the gaskets. When the RPM changes, there's your leak.

 

Yup it was the gasket! I siliconed the gaskets and no more whine.

Thanks everyone for the help.

 

Tell me, are they metal gaskets or the paper(ish) type?

cheers