S4 Quattro Sedan V6-2.7L Turbo (APB) (2000)
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Insert VAG 1687/1 pressure adapter in intake hose -black arrow- using existing clamp (as shown).
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Remove crankcase ventilation tube from intake hose at -white arrow-.
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Plug hose with appropriate metal plug and hose clamps supplied with VAG 1687/1 special tool kit at -white arrow-.
Special tool VAG 1687/1 pressure adapter, installing (2.7L BiTurbo)
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Remove upper air cleaner housing and hoses to intake manifold as necessary (see AESIS Repair group - Maintenance, Air cleaner housing, cleaning;
air cleaner element, replacing).
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Insert VAG 1687/1 pressure adapter in intake hose -white arrow- using existing clamp (as shown).
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Disconnect engine crankcase ventilation hose from intake manifold -black arrow-.
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Plug intake manifold fitting (for crankcase ventilation hose) with appropriate hose and metal plug using clamps supplied with VAG 1687/1 special
tool kit.
Note:
To help find small leaks, BEFORE pressurizing the system, fill system with smoke using special tool KL19210 and adapter KL19210/50 as
described.
An Ultrasonic detector may also be used to detect extremely small leaks where smoke may not be visible.
Special tool KL19210 (Evaporative system leak detector), connecting to 1.8L Turbo
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Install optional fitting KL19210/50 on hose of special tool KL19210.