Your engine is overheating but there is no sign of leaking?

If your engine is overheating without any visible leaks, it could be due to a malfunctioning thermostat that is stuck closed, preventing coolant from circulating properly. Another possibility is a failing water pump, which may not be circulating coolant effectively. Additionally, check for a clogged radiator or low coolant levels, which can also lead to overheating. It's essential to address the issue promptly to avoid severe engine damage.