Series 50 – Section 23.5 Improper Valve Clearance or Injector Height, Worn or Damaged Camshaft Lobes and Rollers

Section 23.5
Improper Valve Clearance or Injector Height, Worn or Damaged Camshaft Lobes and Rollers

To determine if an improper valve clearance or injector height, worn or damaged camshaft lobes and rollers is causing excessive white smoke, perform the following:‪

1. Check for improper valve clearance or injector height, worn or damaged camshaft lobes and rollers; refer to "16.4 Improper Valve Clearance or Injector Height, Worn or Damaged Camshaft Lobes and Rollers" .
2. Check for improper valve clearance or injector height repair; refer to "16.4.1 Improper Valve Clearance or Injector Height Repair" .
3. Verify valve clearance or injector height, worn or damaged camshaft lobes and rollers repair; refer to "23.5.1 Test Engine with Corrected Valve Clearance or Injector Height, Worn or Damaged Camshaft Lobes and Rollers" .

Section 23.5.1
Test Engine with Corrected Valve Clearance or Injector Height, Worn or Damaged Camshaft Lobes and Rollers

Perform the following to determine if the valve clearance or injector height, worn or damaged camshaft lobes and rollers repair resolved excessive white smoke:‪

1. Start and run the engine.
2. Run the engine at idle with a no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range.
3. Visually inspect exhaust for excessive white smoke.
   1. If the engine exhaust emission appears normal, no further troubleshooting is required. Shut the engine down.
   2. If the engine exhaust emission is excessively white, shut the engine down. Check for faulty fuel injector; refer to "23.6 Faulty Fuel Injector" .