Engine Valve Clearance adjustment methods and matters needing attention

Automotive Engine in the use of the process, because Valve agencies or certain parts wear loose, it can cause changes in the original Valve Clearance, about 10,000 km on the general maintenance, inspection and adjustment should be Valve Clearance to comply with technical specifications .

Valve Clearance off hours, although the noise, but will be in operation due to the heat expansion valve closure valve leakage caused lax, valve and valve seat I overheating ablation. Especially diesel, if the gap is too small valve, cylinder compression will result in a low pressure, thus reducing engine power, starting serious difficulties (compression ignition engine is on). At the same time, the gap is too small valve flammable mixture will result in incomplete combustion, so that the HC emissions were significantly increased. Valve Clearance too large, the evening opened valve closure, not only of noise, but will also cause inadequate intake and exhaust not net, a piston down, the mixture continued to burn and to the engine (in particular the exhaust manifold ) overheating, reducing engine power, increased fuel consumption.