We just installed a 96 powerstroke into a 94. Got it fired up Saturday night. Everything seems fine except for when we go to start, cold or hot, it cranks over for 5-10 seconds before it catches and fires. We do not know how well the truck started prior due to the fact we bought the 94 with a bad motor and the 96 without hearing it start. Any ideas what this might be? My only guess is a small air leak in the fuel line which we will be looking for tongiht.