Audi AMB Service Manual page 227

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Special tool VAG 1687/1 pressure adapter, installing (1.8L Turbo)
Separate intake hose from Mass Air Flow (MAF) sensor assembly.

Fig. 297: Special Tool VAG 1687/1 Pressure Adapter, Installing (1.8L Turbo)
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Insert VAG1687/1 pressure adapter in intake hose - black arrow - using existing clamp (as shown).

Remove crankcase ventilation tube from intake hose at - white arrow -.

NOTE:
To help find small leaks, BEFORE pressurizing the system fill system with

smoke using special tool KLI9210 and adapter KLI9210/50 as described on.
An ultrasonic detector may also be used to detect extremely small leaks

where smoke may not be visible.
Special tool KLI9210 (Evaporative system leak detector), connecting to 1.8L Turbo
Install optional fitting LKI9210/50 on hose of special tool KLI9210.

Fig. 298: Special Tool KLI9210 (Evaporative System Leak Detector), Connecting To 1.8L Turbo
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Connect KLI9210 to VAG 1687/1 adapter (KLI9210 is shown attached to VAG 1687/1 at arrow on 1.8L

2005 Audi A4 Quattro
1:01:17 AM Page 215