TM 5-3895-382-24 11. Carbon has collected behind the rotor of the turbine. Remove the carbon. 12. The fuel injection pump is not operating correctly. The fuel injection pump must be repaired or replaced. 13. The fuel injector nozzles are worn or damaged. The fuel injector nozzles must be repaired or replaced. 14. The inlet valves and the exhaust valves are burned. Replace    the    inlet    valves    and    the    exhaust    valves. Determine the cause of the damage to the valves. 15. The piston rings are worn. Replace the piston rings. 16. The actuator of the wastegate is not operating correctly. The actuator must be adjusted or replaced. 17. The valve of the wastegate is not operating correctly. The valve must be repaired or replaced. Problem 2 Black Smoke Probable Cause 1. The element of the air filter is dirty. The element must be cleaned and replaced. 2. A restriction exists in the tube between the air filter and the turbocharger. The component must be repaired or replaced. 3. The  turbocharger  is  loose  or  the  clamps  and  bolts  on the turbocharger are loose. Correctly   position   the   turbocharger   and   tighten   the clamps and bolts. 4. The  intake  manifold  is  cracked,  loose  or  the  flange  is distorted. The intake manifold must be repaired or replaced. 5. The drain pipe for the lubricating oil is restricted. The drain pipe must be repaired or replaced. 6. Air or combustion gas is leaking through the seals of the turbocharger. 7. The bearings of the turbocharger are worn. Replace the bearings. 8. Excessive dirt exists in the compressor housing. Clean the compressor housing. 9. Carbon has collected behind the rotor of the turbine. Remove the carbon. Problem 3 Blue Smoke Probable Cause 1. The element of the air filter is dirty. The element must be cleaned or replaced. 2. The crankcase breather is restricted. The crankcase breather (if equipped), or the tubing must be cleaned or replaced. 3. A restriction exists in the tube between the air filter and the turbocharger. The component must be repaired or replaced. 4. The  turbocharger  is  loose  or  the  clamps  and  bolts  on the turbocharger are loose. Correctly   position   the   turbocharger   and   tighten   the clamps and bolts. 5. The  intake  manifold  is  cracked,  loose  or  the  flange  is distorted. The intake manifold must be repaired or replaced. 6. The drain pipe for the lubricating oil is restricted. The drain pipe must be repaired or replaced. 7. Air or combustion gas is leaking through the seals of the turbocharger. Replace the seals. 6-29