Quote Originally Posted by Erni View Post
After 140k miles I changed the sparkplugs on the Yaris. Iridium plugs are amazing. New gap is 0.044, measured the plugs and they were not over 0.045. Dang!
Still they were a bit sooty and the non iridium looked worn. NGK and Toy specify to chsngr them at 120k. Feels smoother at idle now. The rough idle made me think something may be off, but just wear.
I put new plugs in my (now daughter's) 2008 Yaris at 100k. So easy to do just about anything to that car and the plugs are no exception. I don't know how long the car will last but regular maintenance should keep the little four banger going for a long, long time.