Valve Stem-to-Guide Clearance Inspection
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the valves (see VALVE, SPRING, AND VALVE SEAL REMOVAL ).
- Subtract the O.D. of the valve stem, measured with a micrometer, from the I.D. of the valve guide, measured with an inside micrometer or a ball gauge. Take the measurements in three places along the valve stem and three places inside the valve guide. The difference between the largest guide measurement and the smallest stem measurement should not exceed the service limit.
Intake Valve Stem-to-Guide Clearance
Standard (New): 0.020-0.045 mm (0.00079-0.00177 in)
Service Limit: 0.08 mm (0.0031 in)
Exhaust Valve Stem-to-Guide Clearance
Standard (New): 0.055-0.080 mm (0.00217-0.00315 in)
Service Limit: 0.11 mm (0.0043 in)