Spark plug oil leakage is a common engine malfunction, which not only causes poor ignition, idle shaking, and decreased power, but long-term leakage can also contaminate spark plug electrodes, exacerbate carbon deposition, and even damage ignition coils. The core causes are often seal failure or component aging. Only by accurately locating the source of leakage and treating it accordingly can the problem be thoroughly solved and repeated failures be avoided.

The rough surface of castings not only affects the appearance, but may also reduce the wear resistance and sealing of the parts, and even affect the subsequent assembly accuracy. If not resolved in a timely manner, it may lead to the scrapping of the parts. Based on the characteristics of casting technology, starting from the causes, solutions, and preventive measures of the problem, we will quickly solve the surface roughness problem and ensure that the castings meet the requirements for use.

Valve abnormal noise is a typical fault of the engine valve system, which is often caused by metal knocking and can be easily confused with abnormal noise from the crankshaft and timing system. If not diagnosed in a timely manner, it can exacerbate wear on components such as valves and rocker arms, affecting engine power and smoothness. The core of rapid diagnosis is to "listen to the sound, observe the working conditions, and determine the location", combined with simple operations to accurately locate faults. The following are detailed diagnostic methods.

Engine oil burning is a common fault, which not only leads to rapid oil consumption and blue smoke emissions, but also exacerbates carbon deposition and damages engine components. Long term neglect can cause serious wear and even scrap. This article provides targeted repair solutions based on common causes of oil burning, helping to accurately solve problems and avoid blind repairs.