Audi A4

since 1994 of release

Repair and car operation



A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
- Fuel tank and fuel pump
   For what ventilation of a fuel tank is necessary?
   The sensor of the indicator of level of fuel in a fuel tank
   Toplivoprovoda
   The fuel pump with the electric drive
   Dismantle of the petrol pump with the electric drive
   Replacement of the fuel filter
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics





The sensor of the indicator of level of fuel in a fuel tank

The basic case photographed here is usually pasted in a fuel tank; but here it is shown for the sake of presentation separately. Dismantle of the fuel level sensor (1) is possible after pressing a key (shooter). The pressed key removes blocking (2). It is possible to take out the fuel level sensor.

Here you see a deaf flange of a fuel tank under the luggage carrier bottom.

At the left: by figures are designated:

1–a returnable gasoline pipe line from injection system;
2–I will corrode connections of the fuel pump and the fuel level sensor;
3–a gasoline pipe line of supply of fuel to injection system.

On the right: the locking ring of the fuel level sensor here unscrews the special tool (2) by means of a graggers (1).


Assembly provision of a deaf flange:
the arrow on a flange (1 or 2) should be opposite to a mark in a fuel tank (3). In cars with a drive on forward and on all wheels in each case there is the corresponding arrow.

The sensor is inserted from above into the case of an inlet collector inside in the middle of a fuel tank. How it works, you will find Tools and devices in head.

Because of a different form of fuel tanks there are also different fuel level sensors for front-wheel and all-wheel drive models. Identification sign: the fuel level sensor with a rectangular float for models with a forward drive; the fuel level sensor for quattro – with a spherical float.

Fuel level sensor dismantle

 Important: a fuel tank it is possible to fill a maximum on 2/3, otherwise fuel will follow!


 PERFORMANCE ORDER

  1. Cast away a floor covering of a luggage carrier.
  2. Unscrew a black metal cover.
  3. Mark a gasoline pipe line of giving and fuel return – shooters on branch pipes gasoline pipe lines show the direction of movement of a stream.
  4. Remove both gasoline pipe lines after opening of collars.
  5. Unscrew plastic cap nuts. More often they sit very strongly. Therefore put, whenever possible, a stupid screw-driver on an edge of a nut and weaken a nut in easy blows of a hammer on the screw-driver handle. If it is necessary, establish it on different edges of a nut.
  6. Now it is possible to pull a little up a deaf flange of a fuel tank.
  7. If it is necessary, dismantle on a reverse side of a deaf flange a returnable gasoline pipe line and an electric wire.
  8. Mark the assembly provision of a hose and a wire for the subsequent assembly.
  9. Now undertake a fuel tank a hand and take out the sensor, having at the same time wrung out a fixing ledge from the case of an inlet collector.
  10. Disconnect the fuel level sensor socket on a deaf flange.
  11. Before assembly moisten with gasoline a sealing ring of a deaf flange.
  12. Assembly provision of a deaf flange: the arrow on a flange should be opposite to a mark in a fuel tank. Cars with a drive on forward and on all wheels have own arrow for each case.