What makes the engine smoke or what maybe leaking to cause it to smoke?

What is your question?

when starting the engine it begins while pressing the gas it smokes so what could be leaking to cause it to smoke continually without signs of letting up. I added coolant awhile back before the smoke and it all ran out by the end of the day and it smoke then but I was able to run it out for the smoke to stop but it happen again and I didn't add anything at all to it so I'm not sure....

How long has your 1995 Chevrolet G20 had this problem?

awhile couple weeks