What is the tightening torque for NGK spark plugs?
1 Answers
NGK spark plug tightening torque is 20N.m. Here are the precautions for spark plug replacement: 1. Correct size: Always purchase spark plugs that match your vehicle model's specifications. 2. Professional tools: Specialized tools are essential for removing and installing spark plugs. 3. Avoid spark plug thread damage: Removing spark plugs isn't a major issue, but proper tools and methods must be used - never apply excessive force to prevent thread stripping or breakage inside the cylinder. 4. Appropriate torque application: The most critical factor during installation is torque application. Different sized spark plugs require different torque values; for example, 12mm spark plugs typically require 20-25 N·m of torque, while 14mm spark plugs need 25-30 N·m for proper tightening.