How to Adjust Valve Clearance in a Car?
1 Answers
Valve clearance adjustment is performed using the cylinder-by-cylinder method. The specific steps for the cylinder-by-cylinder adjustment method are: 1. Check the valve clearance when the engine is cold; 2. Open the cylinder head cover and inspect in order. When each cylinder's compression stroke ends, check the intake and exhaust valve clearances for each cylinder; 3. Manually rock the rocker arm to check if the valve is stuck. When the piston is at top dead center of the compression stroke, the rocker arm should be loose. Insert a feeler gauge into the valve clearance gap—the clearance value is correct when the gauge can just pass through smoothly; 4. If the clearance does not meet specifications, loosen the lock nut on the rocker arm and adjust the screw with a screwdriver. When the clearance reaches the specified value, tighten the lock nut with the screwdriver; 5. Recheck each valve's clearance to ensure all are properly adjusted.