High Fuel Temperature Return
To determine if high fuel temperature return is causing lack of power, perform the following steps:
- Test for high fuel temperature return.
- Analyze the high fuel temperature test results.
- If the return fuel temperature is less than or equal to 54°C (130°F), check for air cleaner restriction; refer to "12.6 Restricted Air Cleaner Element" .
- If the return fuel temperature is greater than 54°C (130°F), resolve the high fuel temperature return condition; refer to "12.5.1 High Fuel Temperature Resolution" .
High Fuel Temperature Resolution
Perform the following steps to resolve high fuel temperature return:
- Remove and replace fuel filter(s); refer to Series 60 Service manual (6SE2007), fuel system chapter.
- Inspect the combination check valve/regulator, replace if necessary; refer to Series 60 Service manual (6SE2007), fuel system chapter.
- If equipped with a fuel cooler, refer to OEM for inspection guidelines.
- Verify high fuel temperature repair; refer to "220.127.116.11 Test the Engine with Resolved High Fuel Temperature" .
Test the Engine with Resolved High Fuel Temperature
Perform the following steps to determine if high fuel temperature repairs resolved lack of power condition:
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.
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.
- Start and run the engine.
- Test drive the vehicle to ensure lack of power has been resolved.
- If lack of power did not occur during the test drive, no further troubleshooting is required. Shut down the engine.
- If lack of power occurred during the test drive, shut down the engine. Check for a restricted air cleaner element; refer to "12.6 Restricted Air Cleaner Element" .
|EPA07 Series 60 DDEC VI Troubleshooting Guide - 6SE567|
|Generated on 10-13-2008|