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Q: Avalon Misfiring! Codes P0300,P0302,P0304,P0306! on 1997 Toyota Avalon

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Recently did a timing belt on this car. Ran Perfect. I was on the highway and then the engine light started blinking and throwing codes P0300,P0302,P0304,P0306. I changed the plugs, wires, tested coils seemed okay. changed the front 3 injectors. I have a new fuel filter for it still havent put it on. Tested crank sensor and it came out good. I dont know what else there is. Maybe a clogged Cat? but wouldnt a clogged cat cause misfiring on all cylinders? Please help thanks
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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