Valve Guide Clearance

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Valve Stem Diameter

Measure the diameter of the valve stem using suitable tool.

Standard Intake: 5.965 - 5.980 mm (0.2348 - 0.2354 in)

Exhaust: 5.955 - 5.970 mm (0.2344 - 0.2350 in)

Fig 1: Measuring Diameter Of Valve Stem Using Suitable Tool

Courtesy of NISSAN NORTH AMERICA, INC.

Valve Guide Inside Diameter

Measure the inside diameter of the valve guide using suitable tool.

Standard Intake and Exhaust: 6.000 - 6.018 mm (0.2362 - 0.2369 in)

Valve Guide Clearance

(Valve guide clearance) = (Valve guide inside diameter) - (Valve stem diameter).
Valve guide clearance:

Standard Intake: 0.020 - 0.053 mm (0.0008 - 0.0021 in)

Exhaust: 0.030 - 0.063 mm (0.0012 - 0.0025 in)

Limit Intake: 0.08 mm (0.0031 in)

Exhaust: 0.09 mm (0.0035 in)
If the calculated value exceeds the limit, replace valve and/or valve guide. When the valve guide must be replaced, follow the valve guide replacement procedure.