What are the feasible adjustment methods for Chevrolet Le Chi three-cylinder valve?

1, cylinder by cylinder adjustment method, that is, after determining the compression top dead center position of the piston of a cylinder 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.

2. Adjust the crankshaft twice, that is, turn the crankshaft so that the piston of the first cylinder is at the compression top dead center, and mark the flywheel to mark the inspection hole. At this time, the valves of 1, 2, 4 and 6 can be adjusted (referring to the sequence of engine valves from front to back); Then turn the crankshaft once, and then adjust valves 3 and 5, which is actually memory adjustment.