My 91 Camaro 6 cylinder won't start. In troubleshooting, We've determined that the problem is somewhere around the distributer as there's sparks on one side and not the other. The problem we have is that we're not sure if the problem is the module or the coil. We first thought the module, but there are a few sparks. So we think that maybe the coil isn't giving out enough energy to truly spark. We don't want to spend all the money on different parts so any help anyone can give us would be greatly appreciated. Thank you.