I have a 2001 300m the other day i tried to start it it turned over, made a popping sound and smoke rolled from under the hood i opened the hood and noticed the smoke was coming from under the air box, tried starting it again and it turned over like it wanted to start but it acted as though it was flooded after tapping the pedal a few times it started but ran extremely rough and i noticed the smoke coming from under the air box was also pouring out the exhaust and antifreeze was dripping out of the lead pipe before the exhaust wye's together, i pedaled it for a while and the smoke stopped coming from the air box and the antifreeze stopped dripping from the pipe but there was still plenty of smoke coming out of the tailpipe, can somebody tell me whats up?!!!

 

if you have anti freeze coming out of the tailpipe you have some serious engine problems

 

a popping sound and then smoke rolling out and a rough idle, its like 98% chance its blown dude i wouldnt waste my time and money with it, almost sounds like u threw a rod through the side of the block

 

Sounds like a blown head gasket.