AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual A4 2000 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/937/w960_937-0.png AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual

Page 1 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual 21-16
 
     
Charge pressure leak test with 
VAG 1687 
     
Intake system, checking for leaks using 
VAG 1687 Diagnostic Tool
 
      Diagnostic trouble codes (DTCs) related to fuel 
trim, charge pr

Page 2 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual The shop air supply line will later be attached to the inlet of VAG 1687.  -  Close valve -3- before gauge.
-  Close valve -4- after gauge.
-  Remove female fitting from tester (arrow) and install an

Page 3 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual 21-17
      
WARNING! 
     
Use only approved air fittings to adapt shop 
air supply line to VAG 1687 tester. 
     
Special tool VAG 1687/1 pressure adapter, 
installing (1.8L Turbo)  
     
-  Sepa

Page 4 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual 1687/1 special tool kit. 
Pa
ge 4 of 34 Char
ge pressure leak test with VAG 1687
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.21.2

Page 5 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual 21-18
      
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   Page 21
-18
 .

Page 6 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual to VAG 1687/1 at arrow on 2.7L BiTurbo). 
Pa
ge 6 of 34 Char
ge pressure leak test with VAG 1687
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.21.2

Page 7 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual 21-19
      
Special tool LKI9210 (Evaporative system 
leak detector), preliminary set-up  
     
-  Connect smoke generator leads to vehicle 
battery. 
    
With system filled with smoke:  
Special t

Page 8 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual 21-20
      
Special tool VAG 1687, connecting to 
pressure adapter VAG 1687/1 (2.7L BiTurbo)  
      For illustrations purposes VAG is shown lying in 
the engine compartment. In practice the tool 
sh

Page 9 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual 21-21
      
Performing pressure test:  
    
-  With outlet hose -1- of VAG 1687 connected to air pressure adapter:
-  Attach shop air supply line to previously installed male fitting   Page 
21
-16

Page 10 of 34

AUDI A4 2000 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual 21-22
      
Note:  
     Some pressure will be lost past the throttle plate. 
     
-  Readjust test pressure to 0.5 bar ( CAUTION 
above) by turning regulator valve -2-.      
-  Listen for any very
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