How to Repair Valve Leakage?

[LaAlexa]

To identify the fault, it is necessary to repair, adjust, or replace the related worn or damaged components. The causes of valve leakage are as follows: 1. Poor contact between the valve head contact band or valve seat: There are spots and carbon deposits on the contact band, or the contact angle with the valve does not meet the requirements, resulting in poor sealing between the valve and valve seat and causing leakage. 2. Excessive carbon buildup on the valve stem: The reciprocating motion of the valve is not smooth, affecting the timely reset and sealing of the valve, leading to leakage. 3. The valve clearance is too small or other mechanical failures occur: This causes deformation of the valve stem, misalignment between the valve stem and its contact band, resulting in leakage. 4. Fuel injection pump failure: This leads to poor atomization of the injector and delayed fuel injection, causing damage to the contact band between the valve and valve seat, thereby affecting the valve's sealing performance.