To determine if a faulty MCM is causing excessive white smoke, perform the following:
- Check for faulty MCM. Refer to "48 SPN 609 - MCM Fault (Erroneous Data)" .
- Replace the faulty MCM; refer to MBE 4000 Service Manual (6SE420), Chapter 2, “Fuel System”.
- Verify MCM replacement; refer to "11.1.1 Test the Engine with Replaced MCM" .
Test the Engine with Replaced MCM
Perform the following to determine if the replaced MCM has resolved the excessive white smoke:
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.
- Visually inspect the 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. Refer to "11.2 Faulty Turbocharger Boost Sensor" .
|EPA07 MBE 4000 DDEC VI Troubleshooting Guide - 6SE568|
|Generated on 10-13-2008|