July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Valve Springs

Check each valve spring for damage or deformation. Also measure free length and outer diameter.
1. Inspection standard: Refer to "CONTROL VALVE AND PLUG RETURN SPRINGS ".
Replace valve springs if deformed or fatigued.

Fig 1: Identifying Free Length And Outer Diameter Of Valve Spring
Courtesy of NISSAN MOTOR CO., U.S.A.