What are the causes of engine cylinder head oil leakage?
2 Answers
Engine cylinder head oil leakage is caused by: 1. Damage to the engine cylinder gasket; 2. Cracks in the cylinder head. The function of the engine is: to convert the thermal energy of gasoline into mechanical energy by burning the expanding gas in a sealed cylinder to push the piston to do work. The maintenance methods for the engine are: 1. Use qualified engine oil; 2. Use qualified coolant and antifreeze; 3. Regularly clean the scale in the radiator; 4. Regularly clean the carbon deposits in the engine; 5. Regularly replace the three filters of the car; 6. Maintain a reasonable speed. The components of the engine are: 1. Valve train; 2. Crank connecting rod mechanism; 3. Ignition system; 4. Cooling system; 5. Lubrication system; 6. Supply system.
I've seen quite a few cases of engine cylinder head oil seepage. Usually, it's caused by the aging of the cylinder head gasket - that plastic or metal piece responsible for sealing the gap between the cylinder head and block. Over time, exposure to high temperatures and oil contamination causes the gasket to crack or deform, allowing oil to seep through the gaps. Another key reason is bolt loosening; if the bolts weren't tightened properly during installation or became loose due to excessive vibration during operation, the sealing effectiveness is compromised. Engine overheating is another hidden danger - the uneven metal expansion caused by high temperatures leads to cylinder head deformation, making oil leakage more likely. If left unattended, the oil leakage will make the engine surface greasy and might even drip onto the exhaust pipe, creating a fire hazard! Therefore, once oil seepage is detected, immediately check the gasket and bolts. Replacing with new parts can solve the problem, and preventing overheating during regular maintenance is the best strategy.
