TUBE(S), Fuel: Removal: Removal
Cleanliness cannot be overemphasized when handling or replacing diesel fuel system components. This especially includes the fuel injectors, high-pressure fuel lines and fuel injection pump. Very tight tolerances are used with these parts. Dirt contamination could cause rapid part wear and possible plugging of fuel injector nozzle tip holes. This in turn could lead to possible engine misfire. Always wash/clean any fuel system component thoroughly before disassembly and then air dry. Cap or cover any open part after disassembly. Before assembly, examine each part for dirt, grease or other contaminants and clean if necessary. When installing new parts, lubricate them with clean engine oil or clean diesel fuel only.
- Disconnect both negative battery cables.
- Thoroughly clean fuel tubes at both ends.CAUTION:
When loosening or tightening high-pressure lines attached to a separate fitting (11), use a back-up wrench on fitting (12). Do not allow fittings (12) to rotate. Damage to both fuel line and fitting will result.
- If removing fuel tube at No. 6 cylinder, a bracket (4) is located above fuel tube connection at cylinder head. Two bolts (3) secure this bracket to rear of cylinder head. The upper bolt hole is slotted. Loosen (but do not remove) these two bracket bolts. Tilt bracket down to gain access to No. 6 fuel line connection.NOTE:
Before fuel tubes No. 1 or No. 2 can be removed the intake manifold need to be removed first. Remove the intake manifold. Refer to MANIFOLD, Intake , Removal , 6.7L .
- If removing fuel tube at either No. 1 or No. 2 cylinder.
- Place shop towels around fuel tubes at fuel rail and injectors. If possible, do not allow fuel to drip down side of engine.
- Carefully remove each fuel tube from engine. Note position of each while removing. Do not bend lines while removing.