I have a 2002 Dodge caravan 3.3l that came in running rough. It would not communicate with the scanner. I replaced the PCM and still no communication with scanner. Compression test showed no compression on cylinder 1. Rings were washed out in that cylinder from Injector 1 dumping fuel. Installed new engine and still no communication with scanner and still dumping fuel on Injector 1. ANy ideas where to go from here?