Valve Spring Squareness
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
- Set try square along the side of valve spring and rotate spring. Measure the maximum clearance between the top face of spring and try square.
 Courtesy of NISSAN NORTH AMERICA, INC.
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Limit
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: 2.1 mm (0.083 in)
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- If it exceeds the limit, replace valve spring.