Toyota 4Runner P0303 P0305 Error Codes (2003 - 2009)

This video shows you how I troubleshot errors P0303 and P0305 on my 2005 Toyota 4Runner V6 - 2WD. The SUV started missing a cylinder, shuddering badly, losing power and traction as one cylinder did not fire consistently. Replaced Spark Plug (did not work). Replaced Coil. I think this did the trick. Feel free to comment or subscribe to the channel.