Hi. I had some new SC20HR11 spark plugs last summer (july) and put them in after I find them in the trunk, (possibly from the previous owner). And in the second week of February this year, something happened while I was driving. The check engine light flashed (and two other lights), and the engine suddenly only ran on 3 cylinders on my 2010 Toyota Verso 1,6. Had to take the car to a workshop and the result was misfire on cylinder no. 3 (P0303). A valve had been damaged when parts of the plug had fallen into the cylinder. I had to change the engine, which was expensive for me (but cheaper than buying a new car). All the plugs were missing the iridium tip, and the bent part on spark plug (cylinder nr. 3) that goes over the iridium tip has fallen down and caused damage. According to plugs at the workshop, there are many differences between the original and the fake. The workshop has concluded that these plugs are fake. I have seen many videos here on RU-vid about how to find out if it is original or fake plugs, including this video. Thanks to all of you who take the time to show how. 👍 Greetings from Norway.
