hi im new to this so please be patient. my problem is i have a 95 gsr and i noticed coolant running into the passenger side floorboard, i realize this is most likely a hole in the heater core. but i pulled the plug wire on the no.3 cylinder and the spark plug hole itself was filled with coolant, all the way to the top of the plug. so i checked the oil thinking it was a headgasket, the oil was clean. i pulled the cap off the radiator, and it looked like there was a bit of milky looking coolant around the top, but it was mostly clean. the car smoke but only a very small amount. i pulled the head and the gasket was good, and there was no coolant in the no.3 cylinder. also the car ran at normal temp at all times, even on long drives. i know i should have ran some more diagnostics, i just assumed it was a head gasket..