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 negative battery cable at battery. Isolate end of cable.Remove dress-up cover from top of engine.Disconnect electrical connector at fuel pressure sensor (1).Disconnect electrical connector at fuel pressure solenoid (3).

WHEN LOOSENING OR TIGHTENING HIGH-PRESSURE LINE FITTINGS ATTACHED TO A SEPARATE FITTING, USE A BACK-UP WRENCH ON FITTING. DO NOT ALLOW FITTING TO ROTATE. DAMAGE TO BOTH FUEL LINE AND FITTING WILL RESULT.Disconnect fuel line fittings (2) and (4) and remove four fuel lines (3). Note and mark position of each fuel line while removing. Remove fuel line clamp bolt (10).Disconnect rail-to-injection pump high-pressure fuel line fittings (9) and (11) and remove fuel line (12). Note and mark position of fuel line while removing.

Remove three fuel rail mounting nuts (4).Remove rail (2) from cylinder head.