The old 1.9L SEFI engines that went in the 'scorts were known to drop valve seats when they got a lot of miles on them and/or were allowed to overheat.
Anyway, when they did so, some portion of the engines had hidden bottom-end damage, that would later result with a thrown rod. So... anytime an engine drops a valve seat or pistons are allowed to meet valves, at the very least, the bottom end should be disassembled and inspected for damage.