my 94 cav started smoking and leaking coolant from the muffle.also rumbles when turned on.whats wrong

Head gasket is blown,head cracked or warped,or block is cracked.It sounds pretty terminal without expensive repairs.

White smoke=coolant=head gasket, or block cracked-most likely head gasket

Blue smoke=cat converter

this was 5 months ago ,i hope he got it fixed

Lol i never look at the dates either.. Did u ever get it fixed man? I did my own entire gasket job and i havent lost a drop of coolant since. :)