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July 31, 2021 Service bulletin

Hydrocarbons form carbon deposits when low-quality fuel is combined with a short distance driving cycle

Audi technical service bulletin 01131720348711 for 2008-2009 Audi S5.

Bulletin number
01131720348711
Component
Electrical system
Summary
Hydrocarbons form carbon deposits when low-quality fuel is combined with a short distance driving cycle. The carbon deposits interrupt tumble for efficient fuel/air mixture, which causes cold start misfire.

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