What is the adjustment method of automobile valve clearance?

Taking the valve clearance adjustment of four-cylinder, six-cylinder and eight-cylinder engines as examples, this paper explains the valve clearance adjustment of four-cylinder, six-cylinder and V-type eight-cylinder engines: 1 and four-cylinder engines, and their working sequence is 1~3~4~2. When the piston of one cylinder is at the compression top dead center, the intake, exhaust and exhaust valves of three cylinders and the intake of two cylinders can be adjusted. Then, you can rotate the crankshaft once, replace "two noes", replace "one in a row" and adjust the remaining unadjusted valves. 2. The working sequence of a six-cylinder engine is 1~5~3~6~2~4. When the piston of one cylinder is at the compression top dead center, adjust the intake and exhaust valves of one cylinder, exhaust valves of three cylinders and five cylinders, intake valves of two cylinders and four cylinders, and the crankshaft rotates once, and adjust the other unadjusted valves; 3. V-type 8-cylinder engine with working sequence of 1~6~3~5~4~7~2~8. When the piston of one cylinder is at the compression top dead center, the intake valve, exhaust valve, intake valve and exhaust valve of one cylinder, two cylinders, seven cylinders, eight cylinders, one cylinder, three cylinders, five cylinders, six cylinders and four cylinders cannot be adjusted; When cylinder 4 is at compression top dead center, the crankshaft adjusts the remaining eight unadjusted valves; 4, jud that working sequence of the multi-cylinder engine and adjust the valve clearance; Turn the crankshaft, open the intake valve (or exhaust valve) of a cylinder, continue to turn the crankshaft, and then observe the cylinder with the intake valve open until the intake valve or exhaust valve of each cylinder is opened once. Then, when the crankshaft rotates, the priority order of opening the intake valve or the exhaust valve is the action order of the engine. Then, according to the working sequence of the engine, the above method is selected to adjust the valve clearance.