What are the precursors of diesel engine cylinder gasket burning?
2 Answers
Precursors of diesel engine cylinder gasket burning: Decreased engine power, weak driving performance, and poor acceleration; Unstable engine operation, individual cylinders not working, and even engine vibration may occur; Difficulty in starting the engine; Water leakage or air leakage at the joint between the cylinder block and cylinder head; If the gasket burns out between the oil passage and water passage, engine oil may appear in the coolant; Bubbles may emerge from the radiator filler neck, and sometimes water droplets may drip from the exhaust muffler. Causes of cylinder gasket burning: 1. Prolonged engine operation: The engine working under heavy load for a long time, frequently experiencing detonation combustion, leading to localized high temperature and pressure in the cylinder, which burns the gasket. 2. Improper bolt installation: When tightening the cylinder head bolts, not following the specified procedures, resulting in uneven torque and the gasket not being flat against the joint surface of the cylinder block and head, causing gas leakage. 3. Excessive advance angle: Excessive ignition advance angle or fuel injection advance angle, leading to excessively high cycle pressure and temperature. 4. Poor gasket quality: Inferior cylinder gasket quality, uneven thickness; Air pockets inside the gasket, uneven asbestos distribution, or loose edges. 5. Cylinder head deformation: Warped or deformed cylinder head, excessive unevenness of the cylinder block surface, loose individual cylinder head bolts, leading to poor sealing.
I've been driving diesel vehicles for over a decade, and there are usually these signs before a head gasket fails: First, the coolant inexplicably decreases, requiring weekly top-ups. Then, when you open the oil cap, it looks milky like milk, indicating oil-water mixing. The engine frequently overheats, with the temperature gauge quickly rising to the red zone even when climbing a small hill, and the fan seems to run non-stop. White smoke comes out of the exhaust pipe, smelling sweet, which is the scent of burning coolant. The car's power noticeably drops, acceleration feels sluggish, and there's a slight ticking sound. Don't delay with this issue—if the engine blows, it's serious trouble. Head to a repair shop immediately to check the sealing and compression pressure. Regularly inspecting the antifreeze concentration and oil color can prevent most problems. Remember, the engine is your car's heart—address issues early to save money and hassle.
