Why does my car keep misfiring?

Harry-A-NussB to Mechanic Advice@gearhead.townEnglish · 10 months ago

I have a 2000 Toyota Avalon. It started misfiring last week, this is like the 3rd time this year. They just swap the spark plugs and it seems to work fine for a couple months then BAM! Misfire. I’m stumped:

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