Section 11.3
Malfunctioning Air Intake (Grid) Preheater
To determine if a malfunctioning air intake (grid) preheater is causing the excessive white smoke, perform the following steps:
- Check the operation of the air intake (grid) preheater. Refer to "75 SPN 729 - Grid Heater Not Operating Normally"
.
- If heater operates correctly; check for a defective fuel pump. Refer to "11.4 Defective Fuel Pump" .
- If heater does not operate correctly, replace air intake (grid) preheater, refer to MBE 4000 Service Manual (6SE420), Chapter 6, “Air Intake System — Air Intake Elbow and Grid Heater”.
- Verify replacing the air intake (grid) preheater resolved the excessive white smoke condition; refer to "11.3.1 Test the Engine with Replaced Air Intake (Grid) Preheater" .
Section 11.3.1
Test the Engine with Replaced Air Intake (Grid) Preheater
Perform the following to determine if replacing the air intake (grid) preheater corrected the excessive white smoke condition:
PERSONAL INJURY |
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 the engine.
- Run the engine speed to full load.
- 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 excessive, shut down the engine, check for a defective fuel pump. refer to "11.4 Defective Fuel Pump" .
EPA07 MBE 4000 DDEC VI Troubleshooting Guide - 6SE568 |
Generated on 10-13-2008 |