How do you fit a core plug in a 1998 fiat punto?

To fit a core plug in a 1998 Fiat Punto, first ensure the engine is cool and drain any coolant from the engine block. Clean the area around the old plug and remove it using a suitable tool. Lubricate the new core plug's edge with engine oil for a better seal, then position it in the hole and gently tap it in place with a hammer until it is flush with the block. Finally, check for leaks after refilling the coolant.