What should I do if the a60 valve of Dongfeng Shen Feng doesn't ring when refueling?

Abnormal valve noise is caused by excessive valve clearance caused by wear. Engine valves with high mileage are basically loud, which is normal. If we want to solve this problem, we need to replace the hydraulic tappet of the valve.

Other reasons

The valve is the valve train of the engine. If there is no valve, the engine of the car will not work normally. Each engine cylinder basically has four valves, two of which are intake valves and two are exhaust valves. When the engine is in the intake stroke, the intake valve will open, so that the combustible mixture can enter the cylinder.

When the engine is in the exhaust stroke, the exhaust valve will open, so that the exhaust gas generated by combustion in the cylinder can be discharged. The valve is driven by the camshaft. Most automobile engines are basically designed with double overhead camshafts. The engine has two camshafts, one for adjusting the intake valve and the other for adjusting the exhaust valve.

The camshaft is connected with the engine crankshaft through a timing belt or a timing chain. If used for a long time, the camshaft may also be worn. If the camshaft is worn, it may also affect the abnormal sound of the valve. Camshaft wear.

Just replace it. Moreover, the camshaft and the valve are basically under the valve cover, so the camshaft can be seen when the valve cover is removed. The camshaft and valves are basically fixed on the cylinder head of the engine.