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Home >> Chevrolet >> 2017 >> Express 2500 Base, Van Cargo Extended, 2.8L Eng VIN 1 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 2.8L (LWN) Diesel - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement

Fuel Injection Fuel Rail Assembly Replacement

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Callout Component Name
WARNING:

High Pressure Lines deliver diesel fuel under extreme pressure from the injection pump to the fuel injectors. This may be as high as 1600 Bar (23, 200 psi). Use extreme caution when inspecting for high pressure leaks. Fuel under this amount of pressure can penetrate skin causing personal injury, or death. Wear safety goggles and adequate clothing when servicing this fuel system.

Preliminary Procedures

  1. Turn OFF the engine for 30 seconds before proceeding. This will ensure fuel pressure has purged from the fuel system.
  2. Remove and DISCARD the fuel feed pipe (fuel pump to fuel rail). Refer to Fuel Injection Fuel Feed Pipe Replacement (Fuel Pump to Fuel Rail) 
  3. Remove and DISCARD the fuel injection fuel feed pipes (fuel injectors to fuel rail). Refer to Fuel Injection Fuel Feed Pipe Replacement (Fuel Injector to Fuel Rail) 
  4. Disconnect the electrical connectors.
NOTE:

The fuel feed pipes are one time use ONLY. The fuel feed pipes MUST be replaced whenever they are loosened.

1 Diesel Fuel Separator Hose Clamp
2 Diesel Fuel Separator Hose
Procedure 
Remove the diesel fuel separator hose from the fuel injection fuel rail.
3 Fuel Injection Fuel Rail Fastener [2x]
CAUTION:

Refer to Fastener Caution .


tighten 
25 N.m. (18 lb ft)
4 Fuel Injection Fuel Rail

Procedure

  1. Prime the fuel system. Refer to Fuel System Priming 
  2. With the engine running, check the fuel system for leaks.
  3. Replace the fuel filter. Refer to Fuel Filter Replacement 
  4. If replacing, perform the fuel injection small quantity learn. Refer to Fuel Injection Small Quantity Learn