Audi A3

since 1997 of release

Repair and car operation

Audi A3
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
- Power supply system and production of the fulfilled gases
   + Power supply system
   + System of injection of fuel
   + System of injection of the diesel engine
   - System of production of the fulfilled gases
      Operation of the catalytic converter
      Security measures for an exception of damages of the catalytic converter
      Removal and installation of system of release
      Checking of system of release
      Replacement of the central/additional exhaust silencer
      Check of system of release on tightness
      Replacement of the sensor of oxygen
+ engine Electric equipment
+ Manual box of gear shifting
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Elektroskhema


Check of system of release on tightness


At cars with adjustable catalytic transformation the leakage of system of release in front of the sensor of oxygen can result in the following malfunctions:

– To difficulties at start; the engine stops, roughly works at single turns, and breakthroughs at increase in number of turns.

1. Start the engine and close the exhaust silencer a rag or a cap.
2. Hear attentively to release system on leakage existence. If necessary spray places of connections a head of cylinders / a final collector and final a collector/reception a pipe means of "Leck Sucher" and check, whether there are bubbles.
3. Eliminate a leakage.