A few days ago I posted about my 95 wrangler cutting out and sputtering and said I was going to change the fuel filter to see if that fixed it. I changed the filter tonight and drove it. This did not fix my problem. On my way home it started to die, so I pulled over and tried to take off again. I had it in first gear and the Jeep would barely move. After shutting it off and starting it again several times with no change I finally managed to limp into a driveway. I could see it smoking and I thought it was coming from my exhaust. When I got out I looked under the Jeep to make sure there werent any problems with my new filter. The muffler was GLOWING CHERRY RED. Somehow it got so hot it was glowing and smoking. At that point I called for a tow (obviously). So I have a few thoughts... does this mean I have a bad injector? or is it that simple? Also thought maybe a bad spark plug, causing the fuel to not get burnt? Figured this would be the best place to start for ideas... any thoughts welcome!