85 TS6M PCM hissing when engine shuts off around intake gasket

[johnmere]

I was at the lake diagnosing a fuel delivery problem and noticed a hissing noise around the intake gasket towards the middle of the gasket. There is a hole in the head that the gasket doesn't cover and the noise is coming out from there. I have taken a picture where the hole is. This noise also is active when running down the lake which sounds like a exhaust leak. Look at my fuel problem post and what I found out. I have looked on SKIDIM and they showed the intake gasket with a note stating that the hole was smaller for some reason or another. Maybe this will help.