Defective Fuel Pump
To determine if the fuel pump is causing excessive white smoke, perform the following steps:
- Insert a piece of wire through the fuel pump flange drain hole; see Figure
"Fuel Pump Flange Drain Hole Location"
Figure 1. Fuel Pump Flange Drain Hole Location
- Crank the engine momentarily and feel for wire vibration.
- If the wire did not vibrate; refer to "23.2.1 Drive Hubs and Coupling Replacement" .
- If the wire did vibrate, check for aerated fuel; refer to "23.3 Aerated Fuel" .
Drive Hubs and Coupling Replacement
Perform the following for drive hubs or coupling replacement:
- Replace the drive hubs or coupling; refer to "2.6 Fuel Pump Drive" .
- Verify the drive hubs and coupling replacement; refer to "18.104.22.168 Engine Test with Replaced Drive Hubs or Replaced Coupling" .
Engine Test with Replaced Drive Hubs or Replaced Coupling
Perform the following to determine if replaced drive hubs and coupling resolved excessive white smoke:
- Start and run the engine.
- Run the engine at idle with a no-load for approximately 5 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 the engine down.
- If the engine exhaust emission is excessively white, shut the engine down. Check for aerated fuel; refer to "23.3 Aerated Fuel" .
|Series 50 Service Manual - 6SE50|
|Generated on 10-13-2008|