Valve Inspection And Measurement
WARNING: This page is about a different variant/trim than selected.
Clean the valves of carbon and oil. Carbon can be removed with a wire brush.
- Inspect the valves for the following conditions:
- Inspect the valve faces for burning and cracking (1). If pieces are broken, replace the valve and inspect the corresponding piston and cylinder head area for damage.
- Inspect the valve for straightness and distortion (2). Distorted valve must be replaced.
- Inspect the valve stem for wear (3).
- Inspect the valve key grooves for chipping and wear (4) and (5). Replace the valve if chipped or worn.
Measure the valve length (2). Use a slide gauge (1). Refer to Engine Mechanical Specifications for the permitted values.
Measure the valve stem diameter. Use a micrometer gauge (2). Refer to Engine Mechanical Specifications for the permitted values. Note the measurement results.