Hi.
My car is 1997 Corolla Xl Big Body. Just yesterday, got overheating problem and coolant flowed out of the expansion tank. From cold start, temp keeps on rising after 15-20 mins, and you cal see coolant dripping out of the reservoir. What do you think is the culprit?

Any mechanic from taguig who can check my injured car, parked at mckinley hill, fb, taguig city?