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Assembly overview - fuel system > < Injection system

Golf Mk6

Schematic overview - fuel system
   
Schematic overview - fuel system
  WARNING
t  Follow the rules for all work on the fuel system → Chapter.
t  Observe rules for cleanliness → Chapter.
t  Always follow these rules for cleanliness and instructions before starting work and while working on the fuel system.
t  If components of the fuel system between the tank and the high-pressure fuel pump are removed or renewed, the fuel system must be filled to be bled → Chapter. (It is important not to allow the high-pressure pump to run while still empty.)
1 - Fuel tank
q   With fuel system pressurisation pump -G6-.
2 - Fuel filter
q   With pre-heating valve.
q   Assembly overview - fuel filter → Fuel supply - Diesel engines; Rep. gr.20.
q   Removing and installing → Fuel supply - Diesel engines; Rep. gr.20.
3 - Supplementary fuel pump -V393- or fuel pump 2 -V277-
Removing and installing → Fuel supply - Diesel engines; Rep. gr.20.
4 - Filter strainer
5 - Fuel temperature sender -G81-
6 - High-pressure pump
q   After renewing, a first fuel filling must be performed (never allow the pump to run while it is still empty) → Chapter.
q   Removing and installing → Chapter
7 - Fuel metering valve -N290-
q   Must not be removed.
8 - Fuel pressure regulating valve -N276-
q   Removing and installing → Chapter.
9 - High-pressure accumulator (fuel rail)
10 - Fuel pressure sender -G247-
q   Removing and installing → Chapter.
11 - Pressure retention valve
q   The pressure retention valve maintains a residual pressure (for control purposes) of approx. 10 bar in the return lines.
q   This residual pressure is required for the control function of the piezo injectors.
q   The pressure retention valve may only be renewed together with the fuel return lines.
q   After replacement, engine must be run at idling speed for approx. 2 minutes to bleed fuel system.
q   Check pressure retention valve → Chapter.
12 - Injectors (piezo injectors)
q   Injector, cylinder 1 -N30-
q   Injector, cylinder 2 -N31-
q   Injector, cylinder 3 -N32-
q   Injector, cylinder 4 -N33-
q   Removing and installing → Chapter.

   

Assembly overview - fuel system > < Injection system