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.
2. Check for improper valve clearance or injector height repair.
3. Verify valve clearance or injector height, worn or damaged camshaft lobes and rollers repair; refer to section 10.5.1.
10.5.1
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.
[a] If the engine exhaust emission appears normal, no further troubleshooting is required.
Shut down the engine.
[b] If the engine exhaust emission is excessively white, shut down the engine. Check for
faulty fuel injector; refer to section 10.6.
