Surface Distortion

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.

Check the surface distortion of the exhaust manifold mating surface with a straightedge (A) and a feeler gauge (B).
Limit: Refer to "EXHAUST MANIFOLD ".

Fig 1: Checking Surface Distortion Of Exhaust Manifold Mating Surface Using Straightedge And Feeler Gauge
Courtesy of NISSAN NORTH AMERICA, INC.
If it exceeds the limit, replace exhaust manifold.