What if the Freeze plug falls into block?

If a freeze plug falls into the engine block, it can lead to coolant leaks and potential overheating issues, as the plug's purpose is to seal off coolant passages. This can also allow debris to enter the cooling system, potentially causing further damage. It's important to address the situation promptly by retrieving the plug and ensuring the cooling system is properly sealed to prevent engine damage. If necessary, professional assistance may be required to resolve the issue effectively.