Inspection After Disassembly: Piston
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
Check the surface of the piston for rust, wear, cracks or damage. Replace the piston if any abnormal condition is detected.
CAUTION:
Piston sliding surface is plated. Do not polish with sandpaper.