Fuel Rail, Removing And Installing: Notes

WARNING: This page is about a different car, the 2016 Audi A7 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools And Workshop Equipment Required

Pry Lever :80-200
Torque Wrench 1331 5-50Nm :VAG1331
Torque Wrench 1331 Insert - Reversible Ratchet :VAG1331/1
Union Nut Socket :T40055
Torque Wrench 1331 Insert - Open Jaw - 17mm :VAG1332/6

-- Remove the engine cover, refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Free up the wiring harness and hoses on the wiring guide -1- using the Pry Lever :80-200 .

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-- Pull coolant hose back -arrow-.

-- Remove the bolts -2 and 3- and move the wiring guide to the rear.

-- Open the union nuts from the respective fuel rail that must be removed.

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NOTE:

-Left arrow- for the cylinder bank 1 fuel rail

-Right arrow- for the cylinder bank 2 fuel rail

Cylinder Bank 1 Fuel Rail

-- Open the clamps -arrows- and remove the air guide pipe -1-.

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-- Remove the connectors -1 and 2- and the check valve -3- from the bracket.

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-- Disconnect the connector -arrow- from the Fuel Pressure Regulator Valve -N276-.

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-- Remove the union nut -1- on the fuel rail.

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-- Remove the banjo bolt for the fuel return lines from the fuel rail. Refer to -item ) FUEL INJECTORS-.

-- Open the high pressure line union nuts -2, 3 and 4-.

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-- Remove the bolts -arrows- from the fuel rail and carefully place on a clean surface.

-- Seal off all open lines and connections with clean plugs.

Cylinder Bank 2 Fuel Rail

-- Disconnect the connector -1-.

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-- Remove the bolt -3-.

-- Open the clamp -2- and remove the coolant line.

-- Move the coolant expansion tank to the side.

-- Seal off all open lines and connections with clean plugs.

-- Disconnect the connector from the Fuel Pressure Sensor -G247- -arrow-.

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-- Unclip the bracket for the connectors -6 and 7-.

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-- Free up the wiring harness.

-- Remove the rear fuel supply line union nut on the fuel rail.

-- Open the union nuts for the high pressure lines between the fuel injectors and the fuel rail.

-- Remove the bolts from the fuel rail and carefully place on a clean surface.

-- Seal off all open lines and connections with clean plugs.