Valve Springs
- Measure valve spring installed height from surface of cylinder head spring pad to underside of spring retainer. See VALVES & VALVE SPRINGS table under ENGINE SPECIFICATIONS. If installed height is not within specification, a spacer can be installed between cylinder head and valve spring to obtain correct height.
- Inspect valve spring free length and pressure. Replace valve spring if free length and pressure are not within specification.
CAUTION:
Do not install valve spring spacers unless necessary. Using more spacers than required can result in spring breakage or worn camshaft lobes.