Valve Spring: Testing and Inspection

Examining Valve Springs:
1. Remove valve springs.
2. Clean valve springs.

NOTE: Replace valve springs which are not to dimensional tolerance, which are corroded, have surface rust, mechanical damage or are worn at the ends.








3. Check and match up color coding (F) on valve springs. See illustration.
4. Measure spring force when pretensioned clean.

NOTE: If the valve springs do not reach the specified spring force they cause a loss of positive contact at high speeds and must be replaced.