Have almost got my 6.5 turbo swap done to my 80 model dually. I have run the engine some to check for leaks and such. I'm getting a unburnt fuel smell out of the exhaust. I'm running a factory turbo setup and 6.5 injectors with a 6.2 pump. Truck starts within a turn or so of the starter. Could it just need to be run somemore to built heat and get the rings seated? Or be a timing issue?