•
Before starting any service on fuel system, refer to
Fuel Delivery System Description:K9K
.
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When installing fuel filter union bolt or plug bolt, always use new gasket and tighten it to specified torque.
•
When installing injector, fuel feed pipe or fuel pressure regulator, lubricate its O-ring with spindle oil or fuel.
•
When connecting fuel pipe flare nut, first nut, first tighten flare nut by hand and then tighten it to specified torque, using back-up wrench.
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The fuel system installed on the engine injects the high pressure fuel into the engine. Therefore, before starting fuel system service, confirm that fuel high pressure line is not under pressure referring to
Fuel Pressure Relief Confirmation Procedure:K9K
.
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After performing any service on fuel system, refer to
Fuel Leakage Check:K9K
to see if there is any fuel leakage.