How to Adjust Valve Clearance?

[LaAbigail]

Valve clearance adjustment method: After determining the position of a cylinder's piston at the compression top dead center according to the cylinder firing order, the intake and exhaust valve clearance of that cylinder can be adjusted. Once adjusted, rotate the crankshaft and gradually adjust the valve clearance of other cylinders in the same manner. When the engine is running, the valves expand due to temperature rise. If there is no clearance or the clearance is too small between the valve and its transmission components in the cold state, the thermal expansion of the valve and its transmission components in the hot state will inevitably cause the valve to not close tightly. The function of the valve is to specifically input air into the engine and discharge the exhaust gas after combustion. From the engine structure, it is divided into intake valve and exhaust valve. The intake valve is responsible for drawing air into the engine to mix with fuel for combustion; the exhaust valve is responsible for discharging the burned exhaust gas and dissipating heat.