1993 Ford Tempo Black Smoke Misfire

First thing is you need to go and buy yourself a scan tool for your car, which has the eec4 system.. you can pick one up at the local autoparts store probably around 30 bucks.. that way, you'll know where to start looking when that check engine light is on.. or most stores will read them for you free of charge, make sure you get the exact code number, I think 3 digit for your year.. post back here with it,, guessing is a waste of time and money, newer models are even more difficult since the control systems are so much more advanced... soujnd like a broken record, but my opinion is everyone should have a tool that will give them at least the trouble codes, think of the $$$$ you blow on stupid #$@#, could buy a hundred tools. Not being a hardass here, but a lot of parts can be replaced by diy'ers if you have a clue where to start.. also a shop manual or disc is extremely helpful,, of course there's always issues that only specialized equipment can diagnose..