Camshaft Cam Height

Measure the camshaft cam height.
Standard intake cam height: 44.815 - 45.005 mm (1.7644 - 1.7718 in)

Standard exhaust cam height: 43.975 - 44.165 mm (1.7313 - 1.7388 in)

Fig 1: Checking Camshaft Cam Height
Courtesy of NISSAN NORTH AMERICA, INC.
If wear is beyond the limit, replace the camshaft.