HR 16 Engine Valve Air Leakage

It is necessary to remove the cylinder head, grind the valve, check the spring force of the valve and readjust the valve clearance.

At high load and low speed, the air leakage noise of the valve is obvious outside the valve chamber, and the noise increases with the increase of load. The main reason is that when the valve seat is reamed, due to improper operation or excessive wear of the inner hole of the valve guide, the valve seat is skewed or the valve clearance is small, resulting in air leakage noise caused by valve ablation.

Engine HR 16 is the star engine of Nissan, and its code name HR means "higher speed, more agile response". Widely used in Nida, Bluebird,14th generation Sylphy, New Sylphy and other well-known Nissan models. The engine is a new type of high-performance in-line four-cylinder engine, which adopts newly developed all-aluminum alloy materials, so that the engine achieves the harmony and unity of driving performance, economic performance and environmental protection performance. The development goal of HR 16 is to reduce friction, improve thermal efficiency and increase power output through technological innovation of parts.