Direct Fuel Injection Fuel Rail Cleaning and Inspection
WARNING: This page is about a different variant/trim than selected.
Special Tools
EN-47909 Injector Bore and Sleeve Cleaning Kit
Equivalent regional tools: Special Tools .
- For this operation the direct fuel injection fuel rail, the direct fuel injector and the fuel injector seals are removed.
Use the EN-47909 Injector Bore and Sleeve Cleaning Kit (1) to clean the direct fuel injector bores.
- NOTE:
Do NOT soak or submerge the fuel rail or injectors in solvent.
Clean the exterior of the direct fuel injection fuel rail and direct fuel injectors in solvent.
- Inspect the fuel injection fuel rail fuel pressure sensor (1) for damage.
- If replacing, dry the fuel injection fuel rail fuel pressure sensor bore in the fuel rail with a lint free cloth.
- The bore should be free of fuel, debris, and burrs.
- Inspect the direct fuel injection fuel rail and components for the following conditions:
- Damage, debris, or restrictions to the fuel rail
- Damage, debris, or restrictions to the fuel ports in the fuel rail
- Damage to the mounting area for the fuel rail
- Damage to the fuel rail mounting bolts
- Damage to the threads on the fuel rail fuel feed fitting
Inspect the direct fuel injectors for the following conditions:
- Damage to the fuel injector connector (1)
- Damage to the fuel injector
- Damage to the fuel injector housing (3)
- Damage to the fuel injector head adapter (5)
- Damage to the fuel injector combustion sealing surfaces (4).
- Damage to the fuel injector sealing surfaces (2).
- Replace the direct fuel injection fuel rail or direct fuel injector if any damage is found. Do not attempt to repair a fuel rail or injector.
- Clean the fuel injector shaft and fuel injector sealing surfaces (2, 4) from gasoline exhaust particulates and sealing deposit with a brass brush and a lint free cloth.
- Repeat the fuel injector cleaning and inspection process for all 3 fuel injectors.
CAUTION:
Clean the fuel injectors with a copper brush and a lint free cloth in the direction of the injector opening. Do not contaminate the opening. Contamination of the injector opening can lead to a fuel injection system malfunction.