Setting the Right Spark Plug Gap Jeep 4.0 Engines Need
Getting the spark plug gap jeep 4.0 owners usually look for right is the difference between a smooth-running inline-six and one that stumbles every time you hit the gas. If you've spent any time hanging out in Jeep forums or working on your own XJ, TJ, or WJ, you know that the 4.0L engine is basically a tractor motor. It's reliable, it's tough, and it'll probably outlast the frame it's bolted to. But even a tank needs a little fine-tuning now and then to keep it from getting grumpy. ...