yeah see both coil packs are firing, soo thats what i don't get, and the truck only ran rough one time, which was yesterday morning, i went away for a week, drove fine sunday, went to school on monday, i started it, let it idle since its cold, then right before i went to pull out the RPM droped and acted like it wa going to stall, then acted like it was going to do it at the bottom of my driveway, then pulled out, shifted, CEL turned off when i took my foot off the gas, the kicked when i reapplied gas, and CEL accompanied the gas, went like that way the whole way into school until i got into town, no rough riding or CEL after that until this morning when i got to school it came on, so i'm gonna got to Advanced Auto Parts and borrow a scanner, and see what comes up, the backfiring into the intake is just something i heard about and wanted to investigate it.
btw, i don't have to worry about a catyletic converter, but what would be causing the lean mixture and reading up on backfiring manifold back firing is from being to lean and exaust backfiring is from being too rich.
1992 ford ranger xlt
3.0 5 spd.
other than that bone stock