i have a 93 s13 hatch with a stock ka24de motor. for some reason it seems to drop cylinder 2 after it warms up to operating temps and only runs on three cylinders. ive changed the plugs, wires, cap and rotor, and the injector on that cylinder. nothing changed. so today i picked up an ecu and tried that, did the same thing. it seems to dump way to much gas into that cylinder and nothing happens, just smells like gas and gas vapor ends up coming out of the exhaust. after i run it for a bit i can pull the plug out and see gas sitting on top of the piston and if i pull the injector gas sprays out a little bit and is sitting where the injector plugs in. no smoke and compression is good as far as i know. keep in mind it only does it after it warms up to normal operating temps.
any ideas? need to figure this out asap.
thanks