ok well ive searched and nothing came up that i wanted.i have a 90 ka24e that one night after putting gas in started running horrible. i put new plugs, wires, cap, and rotor. didnt fix it. i pull off #2 wire and there is no change. so i figured it was bad gas. i drained it and it had alot of water in it. i cleaned the tank threw in 2 gallons of 93 octane. installed new fuel filter fired it up and again no change. so i figured maybe #2 injector was clogged since there was alot of dirt in the tank. i swapped out the injector with a different one. again no change. i did a compression test and it has above 150 across the board. im lost the only thing i can think of is that some how the ecu is messed up. ive read the it could be the egr stuck open or a vaccum leak. but if it was why would only cylinder 2 have a miss fire. i can unplug the injector when its running and no change same when i pull the plug wire. any help would be greatly helpful.