DD15 Improper Valve Clearance, Engine Brake Adjustment, Worn or Damaged Camshaft Lobes and Rollers

Check as follows:‪

1. Check for improper valve clearance, engine brake adjustment, worn or damaged camshaft lobes and rollers.
2. If found, repair the valve clearance, worn or damaged camshaft lobes and rollers.
   

   ENGINE EXHAUST ‪
   To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.‪

3. Start and run the engine.
4. Run the engine at idle for approximately five minutes, allowing the engine coolant to reach normal operating range.
5. Visually inspect exhaust for excessive white smoke.
   1. If the engine exhaust emission appears normal, no further troubleshooting is required. Shut down the engine.
   2. If the engine exhaust emission is excessively white, shut down the engine. Check for faulty fuel injector; refer to “8.4 Faulty Fuel Injector” .