Time for Truth!
My 2012 JKUR, build date 6/5/2012, 24K mi., threw the correct code and goes in for a new head in a week or so when a replacement arrives. They're still running a little behind. Jeep said only about 1/2 of 1% of the Pentastar engines have this problem and haven't really said WTF is wrong. At least not that I can find. Searching this forum indicated several members, including our leader/owner, who have experienced this issue. So OK, what is the dealeo here, warped heads, valves, guides...? Inquiring minds want to know.:thinking: