Symptom Tree t041-011
| Cause | Correction |
|---|
|
Throttle linkage or return spring is binding |
Check the fuel pump throttle linkage and return spring for free movement. Adjust if necessary.Refer to the OEM service manual. |
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|
Fuel drain line restriction |
Check or replace the fuel lines, check valves, or tank vents as needed. Refer to Procedure 006-012. |
|
|
Fuel tank vents are plugged or damaged |
Remove and clean the tank vents. Replace the vents if necessary. Refer to the OEM service manual. |
|
|
Overhead fuel tank check valve is restricted or is not opening |
Check the fuel tank check valve for debris. Check the valve for the correct plumbing arrangement. Refer to the OEM service manual. |
|
|
Fuel pump pulsation damper is cracked |
Inspect the fuel pump pulsation damper. Replace the pulsation damper if necessary. Refer to Procedure 005-011. |
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|
PT fuel pump throttle leakage is excessive |
Remove the fuel pump. Refer to the PT Fuel Pump Rebuild and Calibration Manual, Bulletin 3379084. |
|
|
Injector check ball is not seating correctly or is missing |
Check the injectors. Repair or replace the injectors as necessary. Refer to Procedure 006-026. |
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|
Injector is malfunctioning (PT/STC) |
Remove and check the injectors. Replace injectors as necessary. Refer to Procedure 006-026. |
