engine AUDI A4 1999 B5 / 1.G Vacuum System Servicing Workshop Manual

AUDI A4 1999 B5 / 1.G Vacuum System Servicing Workshop Manual A4 1999 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1116/w960_1116-0.png AUDI A4 1999 B5 / 1.G Vacuum System Servicing Workshop Manual

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AUDI A4 1999 B5 / 1.G Vacuum System Servicing Workshop Manual 87-187
      
Vacuum supply and one-way valve, 
testing
 
    
Notes:  -  Detach hose -B- from two-way valve (N63) and connect vacuum gauge 
VAG1368 (or equivalent) to hose. 
-  Start engine and run a