Fuel Leaks
WARNING: This page is about a different variant/trim than selected.
- Remove the air cleaner assemble. Refer to Air Cleaner Assembly Replacement .
- Clean all of the fuel lines between the fuel injection pump and the fuel injectors using brake cleaning solvent, and let dry.
- Add 8 ounces of oil dye to the fuel tank. On dual tanks, add the dye to the front, or primary tank. Refer to Fuel System Description .
- Start and idle the engine for 3-5 minutes.
- Command the fuel pressure control to 160 MPa (23,206 psi) with a scan tool.
- Inspect for fuel leaks around the fuel injection pump, fuel rails, and fuel injector supply lines with a J 28428-E
High Intensity Black Light Kit.
Tighten or replace any leaking lines or components. Refer to the following:
- Fastener Tightening Specifications
- Fuel Injection Line Routing Diagram
- Fuel Injector Return Pipe Replacement -Left
- Fuel Injector Return Pipe Replacement - Right
- Fuel Return Pipe Replacement
- Fuel Rail Assembly Replacement - Bank 1
- Fuel Rail Assembly Replacement - Bank 2
- Fuel Return Junction Block Replacement
- Fuel Injection Pump Replacement
- Fuel Injector Replacement (Left)Fuel Injector Replacement (Right)
- A fuel leak may be caused by restricted return fuel lines. Refer to Fuel Return System Diagnosis .