How to Adjust Valves on a 4-Cylinder Engine?

[AdalineLynn]

4-cylinder engine valve adjustment method: 1. Rotate cylinder 1 to the compression top dead center aligned with the 0 mark or the pointer on the timing gear housing, then adjust the intake and exhaust valves of cylinder 1, the intake valve of cylinder 2, and the exhaust valve of cylinder 3. Rotate another 360 degrees, then adjust the exhaust valve of cylinder 2, the intake valve of cylinder 3, and the intake and exhaust valves of cylinder 4; 2. First use a wooden-handled screwdriver to listen to the cylinder noise below, refer to this cylinder's valve clearance, and then adjust the valve clearances of the other 3 cylinders; 3. When adjusting valve clearance on a cold engine, it should be slightly larger, while on a hot engine, it should be smaller. Generally, after the engine is hot, turn it off and then adjust the valve clearance. The function of valves is: specifically responsible for introducing fuel into the engine and expelling exhaust gases.