When reinstalling pistons with new rings, what should you do if the ring compressor does not fit tightly around a piston skirt?

When reinstalling pistons with new rings, ensuring that the piston rings are properly compressed during installation is crucial for a successful fit. If the ring compressor does not fit tightly around the piston skirt, checking the ring end gap is an essential step.

The ring end gap refers to the space between the ends of the piston rings when they are installed within the groove of the piston. When the pistons are fitted with new rings, it’s important to verify that the end gap falls within the manufacturer's specifications. If the gap is too wide, it may indicate that the rings are not the right size for the piston or that the rings have not been properly installed.

Checking the ring end gap can reveal whether the issue stems from the rings themselves or from another aspect of the installation process. A proper end gap ensures that the piston can expand and contract with temperature changes without exerting too much pressure on the cylinder walls, which could lead to engine performance issues. Addressing the ring end gap makes it possible to make the necessary adjustments, such as replacing the rings with the correct size if needed, which ensures that the installation will be successful.

In contrast, greasing the piston skirts may not resolve the tight fit issue and could complicate the process further. Res