Guys, I’m pulling my hair out with this misfire on cylinder 8 issue. I’ve had this truck less than a month and it’s been in two different shops trying to get this issue found and fixed. Here’s what has been done so far ( something’s twice) spark plugs changed, coil pack moved to another cylinder, checked valve train ( cam, lifters, and valve springs and all good), vacuum lines checked for leaks, the fuel injector have been moved to another cylinder as well. Usually the code repops within 50-70 miles. When they swapped the fuel injector I got almost 200 miles before it came back. The mechanic even put in some BG 44k. At this point I’ve spent about 500.00 to chase this issue.....I’m sure I’m not the only one to have this issue with a 150k 5.7 2013 Ram 1500. Any help or advice would be greatly appreciated.