Review on 🔌 NGK Iridium IX Spark Plug BKR8EIX #2668 - Set of 4 by Shawn Reiter

update review. I think the gapper tool I got here is inaccurate causing me to overshoot it, probably to around 0.036. This could have directly affected the life of the spark plugs, I'm not sure, but I have to believe it affected them. I bought these for my 2011 Cruze daughters. The first few months they were fine and the engine seems more responsive but now after about 8 months and probably 8000 miles they are firing under load. When I installed them I set them at 0.027, but when I looked at them today they were all around 0.040. I put the old spark plugs back in and the misfires are gone. Now I'm trying a different brand. Maybe it's for people who want to fill gaps every half year, but it's not for me.