alright, i have a 89 supra non-turbo. 7M-GE. i changed the sparkplugs and wires today. and changed the thermostat to waterpump hose. i had to take the throtle body off and stuff to do this. the car was running beautiful at first. then it sounded like it was miss firing and kida bogged. then smoke came out of the muffler and never stopped. like 4th of july smoke bomb smoke. then water sprayed my windsheild so i pulled into the driveway. the water came from under the hood. i opened the hood and i could hear the radiator boiling. the cap was off the coolent lid and the resevior was empty. the stick was broke off the cap too...yeah. so i was wondering what the **** is happening? if anyone might have a clue im all ears...eyes.... thanx

oh noes

have you checked all your water pipes, make sure they are all firmly connected.. it could be possible you have blown one off therefore emptied the system of water

the other one :(
bhg

lift your oil cap... what colour is your oil

white smoke,or black smoke ,or both?water or oil is getting in the engine.smoke never stopped,maybe a leak between the head and the block,maybe a leaking valve seal.supra girl is right ,it could be a bhg.damn!

Make sure you put the plug wires on the right posts on the distributor and on the right cylinders, that will cause a misfire. As far as the smoke do a compression check MKIIIs have a problem with blowing head gaskets.