SEAT Workshop Service and Repair Manuals

Fuel rail: Removing and installing t  Fuel rail: Removing → Anchor t  Fuel rail: Installing → Anchor. Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Socket wrench insert -T40055-, see equivalent → Anchor

t	Torque wrench (5 - 50 Nm) -V.A.G 1331-, see equivalent → Anchor

t	Ratchet -V.A.G 1331/1-, see equivalent → Anchor

t	Insert e/c 17 terminal -V.A.G 1331/6-, see equivalent → Anchor

Removing .   WARNING t  When carrying out work on the fuel system, always observe the guidelines for cleanliness and the instructions → Chapter. t  Follow these instructions and rules for cleanliness before starting work and while working on the fuel system.

–  Remove the engine cover upwards -arrows-.

–  Disconnect electrical connector -arrow- on fuel pressure regulating valve -N276-.

–  Disconnect electrical connector -B- on fuel pressure sender -G247-. –  Detach the vacuum hose -A- from the cylinder head cover.

–  Remove fuel return hose from fuel rail; release hose clip -arrow- for this.

–  Open retaining clips -arrows- on wiring harness and pull electrical connectors off glow plugs.

–  Unscrew bolt -2- and union nuts -1 and 3-, and remove high-pressure line.

–  Unscrew bolts -2-, lay coolant return line aside.

–  Unscrew bolts -arrows-, lay coolant return line aside. –  Remove line guide from fuel rail and lay aside.   Caution t  Mark allocation of high-pressure pipe to cylinder. They must always be re-installed on the same cylinders. t  Observe rules for cleanliness when working on the injection system. t  Plug open connections with suitable sealing caps immediately. –  Loosen union nuts for high-pressure pipes at rail element using tool insert, AF 17 -V.A.G 1331/6-.

–  Unscrew the union nuts -1- for high-pressure pipes on injectors using a 17 mm socket wrench insert -T40055-. –  Place the removed high-pressure lines on a clean cloth.

–  Unscrew two bolts -arrows- to remove fuel rail. Fitting . Installation is carried out in reverse order, noting the following: l  Specified torques → Chapter. –  Install high-pressure lines tension-free → Chapter.   Note t  In case of reuse of the high pressure lines the cylinder specific code must be taken into consideration. t  The high-pressure lines can principally be reuse according to the following test: t  Check taper seat of respective high-pressure line for deformation and cracks. t  The bore of the pipe must not be distorted, restricted or otherwise damaged. t  Corroded lines should no longer be used.