Faulty Fuel Injection
To determine if a faulty fuel injection is causing excessive white smoke, perform the following:
- Check for faulty fuel injection; perform “Flow Test at Fuel Injector”. Refer to "3.3 Test #2 Flow Test — At Fuel Injector" .
- Repair or replace the faulty fuel injection; refer to MBE 900 Service Manual (6SE9007), fuel system chapter.
- Verify fuel injection fuel injector repair or replacement; refer to "11.9.1 Test the Engine with Repaired Fuel Injection" .
Test the Engine with Repaired Fuel Injection
To determine if a faulty fuel injector is causing excessive white smoke, perform the following:
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.
- Start and run the engine.
- Run the engine at idle with a no-load condition for approximately five minutes, allowing the engine coolant to reach normal operating range, approximately 70-95°C (158-203°F).
- Visually inspect exhaust for excessive white smoke.
- If the engine exhaust emission appears normal, no further troubleshooting is required. Shut down the engine.
- If the engine exhaust emission is excessively white, shut down the engine. Check for improper valve clearance or damaged camshaft lobes and rollers; refer to "11.10 Improper Valve Clearance, Worn or Damaged Camshaft Lobes and Rollers" .
|EPA07 MBE 900 DDEC VI Troubleshooting Guide - 6SE580|
|Generated on 10-13-2008|