Why does my car make a hissing sound?

I have a cricket and a snake in my engine bay.
My car has a hissing sound coming from the clutch.
And a cricket-like sound also. It has a completely new clutch asseembly including a flywheel. My trans was grinding gears and went so I replaced it with new clutch and flywheel and the cricket sound came back and the hissing started.

1994 Honda Civic Manual 5speed

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