Newbie here...

I have a '95 Milly S with the 2.3 Miller Cycle. Just got it this last spring (good deal) for a good run around car. Has like 115K miles on the car, but engine was rebuilt about 15K ago. Car ran like a raped ape. We even decided to take it California on trip, and again, ran super!!

About two weeks after returning home, I was going to take a short road trip, and while going up a pretty good hill I noticed it was suddenly running very sluggish. Plus, I looked down and noticed it was hotter than usual and pulled over, etc. Coolant wasn't low, let it cool down and limped it back to town (never has heated up again). While on my way home, it continued to run sluggish on accel and CEL began blinking for a while and then stayed on. I later found out this to be a "random misfire" code after hooking it up to scanner (I don't recall the code #). Took it to a technician, he found #6 to be the problem, replaced plug and still ran sluggish on acceleration, but no light coming on. Upon more review, he decides the front cat needs replaced...so, I did that thinking that was surely the problem. I did notice also that indeed the #6 was were the misfire was happening as evidenced by fuel around the gaskets and port of manifold. Go for a test drive...same thing!!! No better. Again, after driving for a while, the CEL begins to blink and then stay on again. So, I know the Mazda tech. who rebuilt the motor (unfortunately he is not close) and I call and he says to replace the coil on #6 and he sends me one (used, but sure it is good). I replace it, check the plug, and go for drive and same thing, except I didn't push it until the CEL came on this time. I could tell it wasn't right, and was running the same sluggish way. Kind of feels like missing when you step on it some.

Any suggestions???