What causes raw fuel to be dumped into catalytic converter on 2000 Kia Sportage?

Raw fuel can be dumped into the catalytic converter of a 2000 Kia Sportage due to several issues, including fuel injector malfunctions, a faulty engine control unit (ECU), or problems with the ignition system. If the fuel injectors are leaking or stuck open, they may deliver too much fuel to the engine. Additionally, a malfunctioning ECU can cause improper fuel-air mixture settings, leading to unburned fuel entering the exhaust system. This can result in overheating and potential damage to the catalytic converter.