misfires

Hey all! I'm new around here, so I apologize if this isn't the place to post this but... My 4L 2001 Jeep TJ is struggling with misfires. It runs fine normally after starting it up cold. I can drive it down the road without problems, has power and everything. but when I drive for a little while...

Ok super weird. Other than obvious signs of rods or piston movement...I don't hear any clapping or knocking... What other factors can lead to plug gaps shrinking from .035 to .031 within a couple of weeks weeks? 😬 I've been going through my TJ and tuning up different systems. Swapped out the...

So I was coming home from FT Lauderdale back to Winter Haven, and on SR-60 my Jeep started to do the shake and then CEL came on full flash, used my scan tool, Cyl 4 Misfire, hotswapped the plug at an auto zone and boom all good until it started happening again, took it to my mechanic he said the...

When I got my Jeep close to three years ago I decided to go crazy and replace everything on it to make it last as long as possible and run great! Unfortunately, that ended up being a big mistake that I have paid for very deeply as far as my pockets are concerned. One of the mistakes I made was...