What is the valve clearance for cars?

[StAna]

Car intake valve clearance: 0.15-0.25mm; exhaust valve clearance: 0.25-0.35mm. Below is the method for adjusting valve clearance: 1. Warm up the engine until the coolant temperature reaches 80-90°C. Open the timing mark inspection hole on the clutch housing and the cylinder head cover, ensuring the cylinder head bolts are tightened to the specified torque. 2. Rotate the crankshaft to align the "0" mark on the flywheel with the marking line on the clutch housing. Confirm that the curved surface of the intake and exhaust valve rocker arms of the first cylinder is in contact with the camshaft's cam base circle, meaning the first cylinder piston is at the compression top dead center (if the rocker arm is in contact with the cam, rotate the crankshaft 360°). At this point, the valves are in the closed position. 3. Loosen the lock nut (2) of the adjusting screw (1). Use a screwdriver to turn the adjusting screw so that the gap (A) between the lower end of the screw and the upper end of the valve stem (3) matches the specified clearance value, determined by the thickness of a feeler gauge. Keep the screwdriver steady, tighten the lock nut to the specified torque, and then recheck the gap (A) with the feeler gauge. This completes the adjustment of the intake and exhaust valve clearance for the first cylinder. 4. Then, rotate the crankshaft clockwise (viewed from the front of the engine). For a 4-cylinder engine, every 180° rotation allows adjustment of the valve clearance for the next firing cylinder in the ignition order (1-3-4-2). For a 3-cylinder engine, every 240° rotation allows adjustment in the ignition order (1-2-3). The rotation angle of the crankshaft can be calculated using the number of teeth on the flywheel ring gear.