Once again I'm working on my friends 97 Camaro. We changed the optispark yesterday, and it still runs like shit. When the engine turns over it acts like it's out of time.....but I was always under the impression that an optispark will only go on one way. It slid on easily and mounted flush. One thing is the motor had alot of unburned fuel in it from where the other opti went bad....so we took the plugs out and killed all fuel and ignition power and spun the motor over to get the fuel out of the cylinders. You could smell it the first few times I spun it.....we haven't put the plugs back in and tried it yet. Also, the ICM was reading bad on a tester so we replaced that as well. I guess what I want to know is could the opti be installed wrong? Was the motor just maybe flooded? I know I could take the front back apart and take the cap off the opti and check to make sure the rotor is pointing in coordinance with #1...but I want to try and make sure I'm not chasing my tail first.