What are the early symptoms of a blown head gasket?

[Douglas]

The early symptoms of a blown head gasket: decreased engine power and water or air leakage. Causes of a blown head gasket: 1. Abnormal engine operation leading to overheating or detonation; 2. Improperly installed or incorrectly oriented head gasket; 3. Cylinder head installation not following the specified sequence and torque; 4. Contaminants between the head gasket, cylinder head, and cylinder block during installation, causing poor sealing and damage; 5. Poor-quality head gasket with inadequate sealing. The head gasket, located between the cylinder head and cylinder block (also known as the cylinder head gasket), functions to fill microscopic gaps between the cylinder block and cylinder head, ensuring a tight seal at the joint surface. This maintains the combustion chamber's seal, preventing cylinder leakage and water jacket coolant leaks.