Overheating: If your engine is overheating, it can cause the coolant to expand and build up pressure in the cooling system. When the engine stops, this pressure can cause the coolant to escape through the weakest point in the system, such as a blown head gasket or a cracked radiator.
Faulty Cooling System Components: A malfunctioning thermostat or a clogged radiator can restrict the flow of coolant and cause the engine to overheat, leading to a coolant blowout. A faulty radiator cap may not release pressure properly, causing the coolant to boil and escape from the system.
Head Gasket Failure: A blown head gasket can allow coolant to leak into the combustion chamber or mix with the engine oil. This can lead to a loss of coolant and eventual overheating, causing a coolant blowout.
Cylinder Head Problems: A cracked or warped cylinder head can also cause coolant to leak into the combustion chamber or mix with the engine oil, resulting in overheating and a coolant blowout.
Engine Block Damage: In severe cases, a damaged engine block can lead to coolant leaks and overheating, causing the coolant to escape from the system when the engine stops.
