i have a 95 camaro with a 3.4 in it. i am having overheating problems. temp gauge quit working. smokes a little bit out of the exhaust. cant find any leaks. resivour keeps over flowing. hopefully some one can tell me possible problems thanks

 

[X(] well that doesnt sound good. my first guess is a head gasket problem but will need more info first. this smoke, is it there after it warms up?? is it fairly white in color like more dense than the steam at startup on a cold morning?? smell kinda sweet?? if there are no leaks under car and water keeps disappearing then its going out the exhaust(head gasket or worse). if its keeps boiling over but doesnt require more water then i might suspect just a bad thermostat causing it to overheat. need some more of the details kurt