Cayenne Turbo (9PA) V8-4.8L Turbo (2008)
Replacing Teflon sealing ring on high-pressure fuel injector
NOTE:
Incorrect handling of injectors
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Leaks in combustion chamber
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Teflon sealing rings must always be replaced after removal and before refitting injectors.
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Do not replace Teflon sealing rings until just before fitting the injector.
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Install injector immediately after replacing the Teflon sealing ring.
INFORMATION: The tool numbers refer to the individual parts of the tools in the repair kit T10133 and the supplement set T10133/11-15 (unless
indicated otherwise).
Installation position of Teflon sealing ring: -arrow-
1. Remove high-pressure fuel injector.
2. Clean fuel injector carefully using a plastic brush (or cloth) and acetone or solvent naphtha. Hold Teflon sealing ring gently using a pointed-nose
pliers and carefully pull off Teflon sealing ring -1-. Do not scratch valve body.
3. Also clean sealing ring groove in the area of the sealing ring. Remove any deposits (coking).