RAM 3500 HD Truck 4WD L6-6.7L DSL Turbo VIN A (2007)
Fuel Supply Line: Service and Repair
Installation
INSTALLATION
All high-pressure fuel lines are of the same length and inside diameter. Correct high-pressure fuel line usage and installation is critical to smooth engine
operation.
CAUTION: Anytime a high-pressure line is removed from the engine, its fuel connector nut (12) at the cylinder head must first be retorqued.
1. Tighten nuts (12) at high pressure injector connector nut at the cylinder head. Torque nut to 50 Nm (37 ft. lbs.).
2. Position proper fuel line to proper injector on engine. Tighten fittings hand tight at both ends of line.
3. Tighten fuel line at cylinder head. Torque nut to 40 Nm (30 ft. lbs.).
4. Tighten fuel line nuts at fuel rail to 40 Nm (30 ft. lbs.).
5. If fuel line at No. 6 cylinder has been replaced, tilt metal bracket (4) upward and tighten two bolts (3) at rear of cylinder head. Tighten to 43 Nm
(32 ft. lbs.).
6. If necessary, install EGR valve/air intake manifold assembly.
7. Connect both negative battery cables to both batteries.
8. Prime fuel system.
9. Check lines/fittings for leaks.