yesterday out of no where my rio started to misfire so i immediately took it into autozone to have it checked. when doing so the check engine light was on, but solid.
the tests came back with P0300, P0301, and P0302 or 3. I cant find the papers, but its 3 cyns that are misfiring.
the guy at autozone suggested i try changing out the plugs first since its cheaper and has been known to fix this issue.
the second i bought the plugs i went home and changed them out. once finished i started up the car and not only was the car still misfiring, but the check engine light is now flashing…
i did notice one thing when changing the plugs.
if facing the engine the second coil from the left had a bit of what looked to be rust. i was able to wipe it off with ease.
any ideas on what my next move should be?