It's a possibility that coolant is leaking (slowly seeping) into one of the cylinders through a crack in the head gasket, thus creating a pathway for the coolant to travel. If this occurring you would see excessive you would see extra vapor from the exhaust pipe
You may have blown a head gasket, check you oil to see if the antifreeze is leaking into there.
Leak is from the intake manifold at the back by the firewall. drips when not running due to presure at the top, vaporizes on the exhaust pipe. Need a new manifold gasket, $500 labor $50 parts. 4-5 hrs time
If you have tried the raiator and the reservoir and hoses, you should have you intake gasket checked.
pressurize the system. that'll make the leak leak faster and you should be able to find it easier.
Examine the water pump. Look for water around the base of the pump after the engine is turned off.
you cant
cant answer that for safety reasons
leaking core plug (freeze) behind flywheel
you might need a new ignition
drill a hole.
Maybe there's coolant leaking from somewhere. (I don't know!)
if you cant figure out how to unbolt it you shouldn't be trying to replace it