Symptom Tree t109
| Cause | Correction |
|---|
|
Air in the fuel system |
Check for air in the fuel system. Refer to Procedure 006-003. |
 |
|
Fuel inlet restriction |
Check for fuel inlet restriction. Refer to Procedure 006-020. |
|
|
In-line check valve(s) is installed backward or has an incorrect part number |
Check the in-line check valve(s) for the correct part number. Check the arrow on the check valve(s) for the correct orientation. Refer to the OEM specifications. |
|
|
Fuel pump pressure regulator is stuck |
Check the fuel pump pressure regulator and the high pressure regulator. Refer to Procedure 005-060. |
|
|
Injector o-rings are damaged or missing |
Remove and check the injectors. Replace the injector o-rings. Refer to Procedure 006-026. |
|
|
PT fuel pump calibration is not correct |
Remove the fuel pump. Check the calibration. Refer to Procedure 005-016 and the PT Fuel Pump Rebuild and Calibration Manual, Bulletin 3379084. |
