the gasket on my intake manifold was all worn out so i threw it out. i made a new one with some thin cardboard since that's what the original one seemed to look like.
now when the motor is running, i think i hear some slight hissing sound. do you think it's air escaping from the gasket? what material is used to make a gasket? i've seen some liquid gasket in a tube. is that any good? will it withstand the heat from the engine and the gas?