Audi A4, S4

since 2000 of release

Repair and car operation

Power supply systems, release and decrease in toxicity of the fulfilled gases

Specifications

Fuel

Petrol models

Unleaded gasoline is not worse AI-95/A-85, probably temporary application of unleaded gasoline is not worse AI-91/A-82.5. Thus engine capacity will decrease a little, at increase in fuel consumption

Do not apply an additive to fuel. They can result in the increased wear or engine damage.

Diesel models

Summer and winter diesel fuel No. 2 or No. 1 on ASTM D975

Do not apply ship (Marine Diesel Fuel), boiler, etc. diesel fuel.

When using diesel fuel with the content of sulfur over 0.5 %, make replacement of impellent oil each 7500 km.

Winter fuel, provides normal working capacity to - 20°С.

Thanks to preliminary heating of fuel at the included system of heating of the car, the car on winter diesel fuel can be maintained, as a rule, without refusals at temperature of external air to - 25°С.

Do not add gasoline to diesel fuel.

In case of application of summer diesel fuel, and also at temperature of external air is lower - 15°С to fuel it is necessary to add certain, depending on temperature of external air quantity of means for fluidity or kerosene improvement.

Means for improvement of fluidity can be used also in a combination to kerosene.

You can receive the certificate of funds on HUNDRED.

The additive share taking into account temperature of external air should be minimum.

The share of kerosene in a mix should make no more than 50 %.

Additive add to diesel fuel before loss of property of fluidity of diesel fuel owing to paraffin allocation. Owing to allocation of paraffin it is possible to eliminate malfunctions only with heating of all power supply system.

Mixing of diesel fuel with kerosene carry out only in a fuel tank. For this purpose in a tank at first fill in kerosene, and then add diesel fuel.

After that the engine should work some time in order that the mix was distributed on all power supply system.

System of injection of the petrol engine

Electronic microprocessor system of the distributed injection (direct injection on the AWA engine) with a thermometric measuring instrument of weight of soaked-up air, an electronic accelerator. On the ALT engine - the inlet pipeline with changeable geometry

Engines 1.6, 2.0 of l (ALT) 14-17

Characteristic	Value
Type
Engine of 1.6 l	Simos
Engine of 1.8 l	ME 7.5
Engine of 2.0 l (AWA)	MED 7.1.1
Engine of 2.0 l (ALT)	ME 7.5
L engines 2.4, 3.0	ME 7.1.1
Idling turns, in minute.
Engine of 1.6 l	700-840
Engine of 1.8 l	740-860 (760-860 on models with a full drive)
Engine of 2.0 l (AWA)	640-800
Engine of 2.0 l (ALT)	700-960
L engines 2.4, 3.0	670-770
The maximum turns, in mines
Engine of 1.6 l	6500-6800
L engines 1.8, 2.4, 3.0	6800
Engine of 2.0 l	6500
Pressure of fuel, atm
On turns х.х.
L engines 1.6, 2.0	about 3.5
Engine of 1.8 l	about 4.0
L engines 2.4, 3.0	3.2-3.8
At vacuum shutdown
Engines 1.6, 2.0л	about 4.0
L engines 2.4, 3.0	3.8-4.2
Residual, through 10 mines after engine switching off
On the heated-up engine
Engines 1.6, 1.8, 2.0л	not less than 2.5
L engines 2.4, 3.0	about 2.2
On the cold engine
L engines 2.4, 3.0	about 3.0
From the preliminary fuel pump (the engine of 2.0 l of AWA)	about 6
From насoса high pressure (engine of 2.0 l of AWA)
On single turns	about 39
Maximum value	about 110
Volume of injection, ml for 30 seconds.
Engines 1.6, 2.0 of l (ALT)	95±10
Engine of 1.8 l	135±10
L engines 2.4, 3.0	90-125
Resistance of windings of injectors, Ohm at +20 °C (on the heated-up engine raises on 4-6 Ohm)
Engine of 1.8 l	12-13
L engines 2.4, 3.0	13.5-15.5
Sequence of ignition
4-cylinder engines	1-3-4-2
6-cylinder engines	1-4-3-6-2-5

System of injection of the turbodiesel engine

Glow plugs

Idling turns, in mines

Characteristic	Value
Adjustment of number of turns of idling within maintenance is not required.
AVB engine	865±75
AVF engine	875±75
Engines AYM, AKE	790±50
The maximum turns without loading	5000±200
Operating procedure of cylinders
4-cylinder engines	1-3-4-2
6-cylinder engines	1-4-3-6-2-5

Pressure of pressurization of a turbokompressor, atm, at rpm

Characteristic	Value
AVB engine	1.9-2.1/3090
AVF engine	2.1-2.6/3000
Engines AYM, AKE	1.9-2.1/3000

The content in the fulfilled gases

Value a lambda 0.97 – 1.03

Characteristic	Value
Idling
Petrol CO 2 engines, %	14.5-16.0
Diesel CO 2 engines, %	9.8-10.8
Diesel engine Dymnost, no more	2.0 (58 %)
O 2, %	0.1-0.5
WITH in an exhaust pipe, %	Max. 0.5
NANOSECOND, ppm	100
The contents WITH on 2500-2800 rpm
WITH, %	0.3
Value lambda	0.97-1.03

Efforts of a tightening of carving connections, Nanometer

The moments of a tightening of fixture are given also in the text of Head and on some иллюстрациях*.

*vydelenny in the text a bold print the moments of a tightening are subject to exact observance; the efforts not allocated with a bold print are given only roughly.

Characteristic	Value
The inlet pipeline to a head of cylinders
L engines 1.6, 2.0	20
L engines 1.8, 2.4, 3.0, 4.2	10
Diesel engines of 1.9 l	25
Diesel engines of 2.5 l	10
Final collector to a head of cylinders
Petrol engines	25
Diesel engines of 1.9 l	25
Diesel engines of 2.5 l	22
Reception pipe to a collector
L engines 1.6, 1.8, 2.0	40
L engines 2.4, 3.0	25
Diesel engines	21
The fuel distributive highway to the inlet pipeline	10
Nozzle clip
Diesel engines of 1.9 l	12Нм+270 °
Diesel engines of 2.5 l	30
Cap nut of the pipeline of a nozzle	30
TNVD gear wheel
Diesel engines of 2.5 l	22
Sensor of provision of a cam-shaft
Engine of 1.6 l	13
Lambda probe
L engines 1.6, 1.8, 2.0, 3.0	50
Engines of 2.4 l	55
Detonation sensor
Petrol engines	20