How to Adjust Valves on a Four-Cylinder Engine?
1 Answers
Method for adjusting valves on a four-cylinder engine: Rotate cylinder 1 to the compression top dead center aligned with the 0 mark or the pointer in the timing gear chamber, 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 and adjust the exhaust valve of cylinder 2, the intake valve of cylinder 3, and the intake and exhaust valves of cylinder 4. Owners can first use a screwdriver with a wooden handle to listen for which cylinder is not making noise or is making less noise, then refer to the valve clearance of this cylinder to adjust the valve clearances of the other three cylinders. When adjusting valve clearance on a cold engine, it should be slightly larger; when adjusting on a hot engine, it should be smaller. Most adjustments are done after the engine is hot and then shut off before adjusting the valve clearances.