How to adjust the valve clearance of Ovi 1 1 liter engine?

First, find the compression top dead center of 1 cylinder, then adjust the intake valves of 1, 2 and 4 cylinders by 0.3mm, then rotate the crankshaft once, adjust the intake valves of 3, 5 and 6 cylinders by 0.30mm, and finally adjust the intake valves from 6, 2, 4 and 1 every 128.

Adjustment method of engine valve clearance

The first method is cylinder by cylinder adjustment. Loosen the adjustment screw first, then tighten the screw shaft with a screwdriver, and then tighten it to the ground after determining the adjustment position. Then, adjust the intake and exhaust valve clearance, and then gradually adjust the valve clearance of other cylinders according to this method.

The second method is two adjustments. Insert a thickness gauge between the valve stem end and the rocker arm, pull it back and forth, and tighten the screw to adjust it. If you feel slight resistance, check and adjust the valve clearance according to the cylinder, which is more accurate. This adjustment method saves time and effort, but it requires higher maintenance personnel.

The role of engine valve clearance adjustment

Engine valve clearance is used to compensate the expansion of the valve after heating. When the automobile engine is working, the valve will expand due to the temperature rise. If the gap between the valve and the transmission parts is too small, the valve will not close tightly when the valve and the transmission parts are heated at high temperature.