Outer Diameter of Valve Lifter

Measure the valve lifter outer diameter.
Valve lifter: 33.965 - 33.980 mm (1.3372 - 1.3378 in) outer diameter
If out of the specified range, replace the valve lifter.

Fig 1: Measuring Valve Lifter Outer Diameter

Courtesy of NISSAN MOTOR CO., U.S.A.