my 1995 lumina ls, 3.1

my car shakes horribly when i come to a stop, and i have smoke coming from under the hood on the driver's side. i just noticed a little antifreeze on the driveway. i have been told i need an intake gasket, or another of my fuel injectors is spent. this has happened before (fuel injector) but i never had fluid leaking. PLEASE HELP!!!!

You say its Anti Freeze have u checked the hoses by the drivers side in the back those are the Heater Coil Hoses. I had a problem like yours and those 2 hoses in the back were the problem they are heater coil hoses u might need to replace them.

3.1's have a terminal intake gasket if you look on the front and the back of the motor you will notice antifreeze coming from the intake it is such a problem that gm changed gasket companies that is probably your antifreeze leak and i have seen where it leaks from the cooling ports into the intake runners that could be your running rough also