What are the causes of a blown cylinder head gasket?

[DiAllie]

The causes of a blown cylinder head gasket are as follows: 1. When installing the cylinder head, the bolts were not tightened in the required sequence or the tightening torque was insufficient, causing the cylinder head gasket to blow during engine operation. 2. Diesel engines operating for a long time under conditions of excessively early fuel injection, leading to an excessively high pressure rise rate during the rapid combustion phase, exceeding allowable limits and resulting in a blown cylinder head gasket. 3. Deformation of the cylinder head or excessive variation in the height of the cylinder liners above the engine block surface, causing some cylinder bores to be inadequately compressed during installation, leading to a blown gasket. 4. Poor manufacturing quality of the cylinder head gasket, deformation of the gasket, or uneven or notched cylinder liner flanges can also cause the gasket to blow.