Section 11.5
Aerated Fuel
To determine if aerated fuel is causing excessive white smoke, perform the following steps:
- Disconnect the fuel line return hose from the fitting located at the fuel tank; refer to OEM guidelines.
- Place the open end of the fuel line into a suitable container.
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 and run the engine.
- Operate the engine at 1000 rpm.
- Visually check to see if air bubbles are rising to the surface of the fuel within the container.
- If air bubbles are present, shut down the engine; refer to "11.5.1 Aerated Fuel Resolution" .
- If air bubbles are not present, shut down the engine, check for improper grade of fuel; refer to "11.6 Improper Grade of Fuel" .
Section 11.5.1
Aerated Fuel Resolution
Perform the following steps to resolve aerated fuel:
- Tighten all fuel line connections between fuel tank and fuel pump; refer to OEM guidelines.
- Visually inspect all fuel lines between fuel tank and fuel pump for leaks.
- Repair damaged components as required; refer to OEM guidelines.
- Verify aerated fuel resolution; refer to "11.5.1.1 Test the Engine with Aerated Fuel Resolution" .
Section 11.5.1.1
Test the Engine with Aerated Fuel Resolution
Perform the following to determine if aerated fuel resolution resolved 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 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 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 grade of fuel; refer to "11.6 Improper Grade of Fuel" .
EPA07 MBE 4000 DDEC VI Troubleshooting Guide - 6SE568 |
Generated on 10-13-2008 |