Need some help

[nedia]

Hissing sound coming from inside the carburetor,ive sprayed all around with starter fluid/carb cleaner to try locate the air leak..but nothing checked everything but seems in tac..anyone give me a hand ..

Nissan Laurel C32 1985,need it to run

http://gyazo.com/670d6e515ff2c9d16b74544fa60ceb06

Engine bay..^

any help will be greatly appreciated