S5 Quattro Coupe V8-4.2L (CAUA) (2009)
‹› If the groove is damage, the fuel injector must be replaced.
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Before installing the new Teflon seal, the seal groove and the shaft of the fuel injector must be cleaned of combustion residue using a clean rag.
Installing
‹› Replace combustion chamber seal and O-ring.
‹› Replace spacer ring if damaged.
‹› Lightly coat fuel injector O-rings with clean engine oil.
‹› Re-insert injector lines at same cylinder.
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Clip the radial adjustment - 1 - to the support ring - 2 -.
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When re-installing a fuel injector, use a clean cloth to clean combustion residue from the groove for combustion chamber seal and the shaft of the
fuel injector.
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Place Assembly Cone (T10133/5) with new combustion chamber seal - 1 - on fuel injector - 2 -.