Rapid adjustment method of engine valve clearance

The first method of Pacific Auto Network is cylinder-by-cylinder adjustment, that is, after the piston of a cylinder is determined to be at the compression top dead center position according to the ignition sequence of the cylinder, the gap between the intake valve and the exhaust valve of the cylinder can be adjusted; After adjustment, turn the crankshaft and gradually adjust the valve clearance of other cylinders according to this method. Secondly, adjust the valve clearance twice, that is, shake the crankshaft to make the piston of the first cylinder at the compression top dead center, align the flywheel mark with the inspection hole mark (such as EQ6 100 engine), and then adjust the valves of 1, 2, 4, 5 and 8, 9.

Causes of engine valve clearance:

1, the valve clearance is too large, the camshaft or valve foot is too worn, the oil viscosity is too high, and the oil quantity is insufficient;

2. The engine valve response will increase the noise of the automobile engine, which has no direct influence on the service life of the engine. However, because the valve response is mainly caused by the increase of valve clearance, too large valve clearance will directly affect the opening and closing of the valve, and will also affect the normal working efficiency of the engine and the effect of the automobile engine.

3. If the valve clearance is too large, adjusting the valve clearance can solve the corresponding fault. However, if the camshaft and valve seat are worn, they need to be replaced. If the viscosity of engine oil is too high, it is only necessary to replace the engine oil with lower viscosity and use different engine oil grades at different times, which also has a certain protective effect on automobile parts and avoids automobile failures caused by automobile engine oil.

(Photo/Text/Photo: Pacific Auto Network Li Linwei)