FIGURE OUT SOME WAY TO BLOCK THE AIR SUPPLY COMPLETELY ,, IT HAS TO HAVE AIR TO RUN , NO MATTER WHAT IT IS USING FOR FUEL , AND I BET IT HAS A BAD TURBO SEAL AND IS SUCKING OIL THRU THE INLET OF THE TURBO ITSELF, THERE REALLY IS NO OTHER PLACE THAT IS COMMON ON THESE ENGS , THAT WILL LET THEM RUN AWAY UNLESS THE CRANKCASE IS WAY OVER FULL ,THEN THEY CAN, BUT I AM TALKING 4=5 QTS TO MUCH, ONCE THE ENG STARTS REMEMBER THERE IS A FULL OIL PRESSURE LINE RIGHT AT THE TOP OF THE TURBO HOUSING AND IF THE SEAL GOE,S IN THE TURBO, IT CAN PUMP OIL RIGHT INTO THE INTAKE AND AWAY WE GO, DROPPING THE CLUTCH IS ROUGH ON THE DISC, BUT IF YOU HAVE TO ??????, PULL THE INLET PIPE FROM THE TURBO OVER TO THE ENG INTAKE AND SEE IF IT IS FULL OF OIL ,, JERRY