So I recently bought a used EX, and had noticed that while charging the water pump didn’t sound the same as my EXR and after riding there was some white foam on the left side of the frame about an inch back from the battery badge. Water pump whirrs at too high a pitch, then gurgles and slows down. I checked the coolant level and found none visible with cap removed. I snaked about 9 inches of zip tie down the hose that goes to the fill port (end of zip tie at 3rd bend in hose) and was able to find some coolant to look at. Looks like water with the slightest tint of green color. I added about 10oz of regular green antifreeze and turned the key on. The water pump whirr was too high pitched at first then you could hear it prime and slow down, but now there is a lot of foam at the fill port and I want to replace the coolant. Is there a drain somewhere?