GM/Detroit 6.5L ENGINE CONTROLS – Fuel Heater Replacement

Removal Procedure
1. Remove the upper intake manifold cover.

2. Open the air bleed valve on top of the fuel manager/filter to release any pressure in the fuel supply system.

3. Remove the mounting bolts that connect the fuel manager/filter to the intake manifold.

4. Remove the wiring harnesses and fuel hoses.
5. Remove the fuel manager/filter by lifting straight up.

6. Remove the fuel heater threaded cap nut by using hand pressure or a strap wrench.
7. Remove the fuel heater from the filter housing.
8. Clean the fuel heater to housing sealing surfaces.

Installation Procedure
1. Install the cap sea l into filter housing.

2. Install the fuel heater.
Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the threaded cap nut.
Tighten
Tighten the cap nut securely by hand.

4. Install the fuel manager/filter (Refer to Fuel Manager/Filter Replacement.

5. Install the mounting bolts that connect the fuel manager/filter to the intake manifold.
Tighten
Tighten the mounting bolts to 25 N-m (18 lb ft)

6. Open the air bl eed valve on top of the fuel manager/filter to bleed air from fuel supply system (Refer to Fuel Feed and Fuel Return Pipe Purge Procedure.

7. Install the upper intake manifold cover.

 

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