S5 Quattro Coupe V8-4.2L (CAUA) (2009)
Fuel Supply Line: Service and Repair
High Pressure Lines, Installing
Special tools, testers and auxiliary items required
‹› Torque Wrench (V.A.G 1331)
‹› 17 mm Socket (V.A.G 1331/6)
‹› SW 14 Socket, Open Ring (V.A.G 1331/8)
Procedure
‹› Do not change the angles of the fuel lines.
‹› High pressure line connections must not show any signs of damage.
‹› Never bend any of the fuel line mounting clamps.
‹› If a mounting clamp was bent, or if the fuel line is being replaced, then the mounting clamps must also be replaced.
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Coat the threads on the union nut with fuel.
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Tighten the high pressure line union nuts by hand, making sure they are seated without tension.
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Use a Torque Wrench (V.A.G 1331) with the 14 mm Socket, Open Ring (V.A.G 1331/8) to tighten the high pressure lines.
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Use a Torque Wrench (V.A.G 1331) with 17 mm Socket (V.A.G 1331/6) to tighten the high pressure lines.