▲ 8 r/WranglerTJ
Changed spark plugs in my '06 TJ 4.0l. They were... due
Just did my valve cover gasket on my 2006 TJ 4.0l (155k miles) and decided to also change the spark plugs because why not... and man these are the worst plugs I've ever seen. I got the jeep a couple years ago, so not sure the age, but they honestly could be original. Funny thing is, she showed no symptoms and ran fan. Good ol 4.0!!
u/Basaraski — 1 day ago