My 2016 Honda Odyssey w only…
My 2016 Honda Odyssey w only 74,000 miles had this issue below that costs 5,000 to fix. I have decided to purchase a new car vs dumping more money into this car. Disappointed as Honda is supposed to be reliable. That same day, a 2012 Honda Pilot came in with only 70,000 miles w the same issue, both Honda in Frisco, Texas.
A "P0303" code (misfire on cylinder 3) accompanied by a fouled spark plug with oil on cylinder 3 most likely indicates a problem with the valve seals on that cylinder, causing excessive oil to enter the combustion chamber and foul the spark plug, leading to a misfire