Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Installation Procedure
- Install the fuel rail and bolts.
Tighten: Tighten the bolts to 26 N.m (19 lb ft).
- Install the fuel injector feed pipes.
Tighten: Tighten the fittings to 41 N.m (30 lb ft).
- Install the fuel injector feed pipe retainers and bolts.
Tighten: Tighten the bolts to 4 N.m (35 lb in).
- Install the fuel junction block.
Tighten: Tighten the fittings to 25 N.m (18 lb ft).
- Connect the fuel return rear pipe (1) to the back end of the fuel rail.
Tighten: Tighten the fitting to 44 N.m (32 lb ft).
- Install the line from the junction block to the injection pump.
Tighten: Tighten the fitting to 40 N.m (30 lb ft).
- Install the A/C compressor bolts.
Tighten: Tighten the bolts to 50 N.m (37 lb ft).
- Install drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L.
- Install the water outlet pipe to thermostat housing.
- Install the PCV hose.
- Reposition the PCV hose clamp.
- Install the L-bracket holding the fuel lines.
- Connect the fuel lines.
- Install the glow plug bracket.
- Install the glow plug relay. Refer to Glow Plug Relay Replacement (Federal Emissions) or Glow Plug Relay Replacement (California Emissions) .
- Connect the glow plug relay electrical connectors (1, 2, 3).
- Install the charged air cooler inlet duct to the turbocharger.
- Align the mark on the duct (2) with the mark on the turbocharger.
- Position the clamp (1) as shown for proper clearance.
Tighten: Tighten the clamp to 6 N.m (53 lb in).
- Install the bolt attaching the positive battery cable junction box and bracket.
- Install the inlet hose to the water outlet tube.
- Install the inlet hose to the radiator.
- Reposition the inlet hose clamps.
- Drain the cooling system. Refer to Draining and Filling Cooling System (with HP2) or Draining and Filling Cooling System (without HP2) in Engine Cooling.
- Connect the negative battery cables. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical.
- Replace all hold down ties.
- Start the engine and check for leaks or noises.
- After the engine warms up, refill the coolant reservoir to the proper level.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.