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Hi everyone, I have been chasing a misfire issue on my 97 TJ 4.0 with just shy of 150,000 miles. I am getting codes p0300, p0303, p0304. It idles rough and has a hard time accelerating especially with any kind of uphill grade. Things I have already done is new spark plugs. Autolite coppers...

Hi Everyone! Just wanted to introduce myself. My name is Matt and I am rebuilding a 97 TJ at the moment. I have also owned a 2001 TJ Sahara and a 85 CJ. I want to thank you guys for being such a help so far without even knowing it. It seemed like every time I had a problem I would search and...