I recently bought a CB GSR and it's only running on 2 cylinders (cylinder 1 and 4). I checked for spark and it seemed as if the 2nd coil pack had died. I replaced the coil packs and the same coil pack wont give any spark. I've checked through the wiring and it all seems fine (the car is original with nothing after market). I checked the CAS (cam angle sensor) and that appears to be working fine so I'm left thinking that either my ECU or ICM (igition control module) is dead (my tacho also doesn't read correctly). I opened up my ecu and the 2 large capacitors in the group of 3 have been replaced at some point with smaller ones and the solder job is horrific. I have a spare ECU on it's way and I'll be picking up a new ICM next week (bloody bills sucked all my money and what was left bought new coil packs). I am in need of some opinions on what else I can check while I wait for pay day to roll back round.