Why is my catalytic converter glowing

Catalytic clogged

Intermittent misfire on 3 what is CEL

Both sides were hot I could understand if one side was hot and the other normal so it puzzled me

Check engine light is not on did put a new coil pack on when changed was on previously

If your plug comes out of the head then raw fuel has the potential to contaminate the cat as it won't be firing and burning fuel. Ahh the ford triton motor

This is an example of a converter meltdown. The converter was super- heated due to a raw fuel condition in the exhaust flow. The excess unburned fuel ignited when it struck the hot ceramic catalyst and drove the temperature far above the normal operating condition of the converter. The ceramic catalyst is unable to withstand the extremely high temperature and begins to melt. The ceramic collapses and the converter is destroyed. The melted ceramic may block the exhaust flow and cause additional damage to the engine. A converter glowing red-hot, or evidence of heat discoloration, confirms this situation. The condition that led to this converter meltdown could be the result of a number of malfunctions including faulty oxygen sensor, an incorrect fuel mixture, worn spark plugs or plug wires, a faulty check valve, incorrect ignition timing, sticking float, faulty fuel injectors or other ignition malfunctions.

How do prevent my new cat from clogging?