What is the valve clearance of the Yuchai 6M four-valve engine?
1 Answers
The valve clearance of the Yuchai 6M four-valve engine is 0.25-0.30 for the intake valves and 0.30-0.35 for the exhaust valves. If there is no clearance or the clearance is too small between the valves and their transmission components in the cold state, the thermal expansion of the valves and their transmission components in the hot state will inevitably cause the valves to close improperly, resulting in air leakage during the compression and power strokes of the engine, thereby reducing power output. In severe cases, it may even be difficult to start the engine. Below is an introduction to car maintenance: 1. Introduction to car maintenance: Car maintenance refers to the preventive work of regularly inspecting, cleaning, replenishing, lubricating, adjusting, or replacing certain parts of the car, also known as car servicing. 2. Scope of car maintenance: Modern car maintenance mainly includes the maintenance of the engine system (engine), transmission system, air conditioning system, cooling system, fuel system, power steering system, etc. 3. Purpose of car maintenance: The purpose of car maintenance is to keep the car clean, maintain normal technical conditions, eliminate hidden dangers, prevent faults, slow down the deterioration process, and extend the service life.