Losing coolant from overflow 88 Mazda rx7?

Answer 1

First of all stop driving the car this could be one of a few problems,

1. Too much coolant in the system (overfilled)

2. Radiator is original and probably starting to block up

- To check drain the coolant in the system, remove the upper and lower rad hoses, unscrew the radiator cap and put a garden hose in the radiator and turn it on after a second or two you should see the water coming out of the lower part of the rad if it does not come out the rad is blocked and needs to be flushed or replaced