Valve Lifter Clearance (EXH)

WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.

VALVE LIFTER OUTER DIAMETER

Measure the outer diameter at 1/2 height of valve lifter with a micrometer (A) since valve lifter is in barrel shape.
Standard: Refer to "CAMSHAFT ".

Fig 1: Measuring Outer Diameter At 1/2 Height Of Valve Lifter Using Micrometer
Courtesy of NISSAN NORTH AMERICA, INC.

VALVE LIFTER HOLE DIAMETER
Measure the inner diameter of valve lifter hole of cylinder head with an inside micrometer.
Standard: Refer to "CAMSHAFT ".

Fig 2: Measuring Inner Diameter Of Valve Lifter Hole Of Cylinder Head Using Inside Micrometer
Courtesy of NISSAN NORTH AMERICA, INC.

VALVE LIFTER CLEARANCE
(Valve lifter clearance) = (Valve lifter hole diameter) - (Valve lifter outer diameter)
Standard: Refer to "CAMSHAFT ".
If the calculated value is out of the standard, referring to each standard of valve lifter outer diameter and valve lifter hole diameter, replace either or both valve lifter and VVEL ladder assembly & cylinder head assembly.
NOTE: Cylinder head assembly cannot be replaced as a single part, because it is machined together with VVEL ladder assembly.