The gasket of the ignition plug can become deformed due to thermal load at high revs because the combination of the engine and the gasket is improper. The deformed gasket can break loose and cause abnormal noise, damage on the cylinder head threads, and malfunction of the ignition plug resulting in engine disorder, which illuminates the engine system warning light. At worst, combustion gas gushes out, and the ignition coil is damaged by it and a short circuit occurs, which results in the blown ignition fuse, causing the engine to stall and not to start.