Q: Piston rings

For optimal ring seating, the cylinder should be honed. I understand you can see the old cross hatch but the honing also ensures that any glaze on the cylinder wall is broken. That glaze prevents the new rings from sealing. It will "work" if you don’t hone the cylinder, it just wont work as well as possible in terms of minimizing oil consumption in that cylinder. Honing is not easy to do and unless you are capable of getting the right pattern, it is something best left to a machine shop. If you need assistance in any phase of the rebuild, you can request service. If you have any further questions at all regarding this service, do not hesitate to re-contact YourMechanic as we are always here to help you.