okay here is the story. 90 DX Hatch/LS swap, i was on the highway and out of no where my car starts to feel slugish and slow and so i get off the next exit and my car starts to idle very rough and can smell it running really rich., car was running just fine and this started happening. so when i got home i left it idleing and it was smoking blk and rough idle still. while it was idleing i pulled off the cylinder #1 spark plug wire and it didnt even effect the idle still running the same, I did it with all 4 spark plug wires one at a time of course, and all did the same thing. i took out the spark plugs and they were covered in black not wet just black didnt smell etc... did a compression test to make sure my motor was good still and i got 190 straight across. what should i check for lmk asap guys thanks

 

bump

 

did you check all the simple ignition stuff, wires, plugs, rotor cap,