What are the clearance values for the intake valve and exhaust valve?

1 Answers
OValeria
07/30/25 7:54am
The clearance values for the intake valve and exhaust valve are: within the range of 0.20mm to 0.25mm, and between 0.29mm to 0.35mm. If the valve clearance is too small, after the engine operates, the components expand due to heat, pushing the valve open and causing incomplete valve closure, resulting in air leakage, reduced power, severe carbon buildup, or burning of the valve sealing surface. Excessive clearance will accelerate component wear and affect the intake and exhaust conditions of the cylinder. It is essential to adjust according to standard data. The functions of the intake valve and exhaust valve: 1. The intake valve's role is to draw air into the engine to mix with fuel for combustion; 2. The exhaust valve's role is to expel the burned exhaust gases and dissipate heat.
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