BMW 3 series E46

Since 1998 of release

Repair and car operation

Power supply systems, injection and release

Specifications

Separate characteristics are resulted also in the text of the Head and in case of compulsion of their performance are allocated by a bold type

Fuel
Petrol engines
316i	неэтилированное, is not worse АИ 95
318i	неэтилированное, is not worse АИ 95
318i	неэтилированное, is not worse АИ 983)
323i	неэтилированное, is not worse АИ 983)
328i	неэтилированное, is not worse АИ 983)
330i	неэтилированное, is not worse АИ 983)
M3	неэтилированное, is not worse АИ 983)
3) refuelling by gasoline АИ 95 with insignificant decrease in capacity of the engine Is possible. АИ 91 it can be applied only in exceptional cases.
Diesel engines
Diesel fuel on DIN EN 590	Tsetanovoe number not less than 49
Do not use biodiesel fuel (a methyl aether рапсового oil)
The tsetanovoe number characterises ability of diesel fuel to spontaneous ignition.
Operation in winter conditions
Winter diesel fuel which depending on its mark provides engine trouble-free work at temperature to-15°S or to-22°S.
Heating of the fuel filter
The car is equipped by the device of heating of the fuel filter. Thanks to it the fuel calculated on its application at temperature to-15°S, it is possible to use at temperature approximately to-25°S. If at air temperature more low-25°S fuel became so dense that the engine is not started, to allow to the car some time to stand in a warmed premise enough. To diesel fuel it is not necessary to mix the various additives raising its fluidity. At temperature drop of external air more low-9°S to summer дизтопливу it is possible to add kerosene (in % from total volume)
From–9 to-15°S	10 %
From–15 to-25°S	30 %
More low-25°S	50 %
At temperature drop of external air more low-20°S to winter дизтопливу add means of reduction of viscosity or kerosene (in % from total volume)
From–20 to-26°S	10 %
From–26 to-31°S	30 %
More low-31°S	50 %
Capacity of a fuel tank
Volume	63 l
Including a reserve stock	8 l
Control system of the engine
316i	BMS 46
318i	BMS 46
318i	Siemens MS 42.0
323i	Siemens MS 42.0
328i	Siemens MS 42.0
320d	DDE Bosch 3.0
330d	DDE Bosch 3.0
BMS - a control system of engine BMW.
MS - a control system of the engine (Motronic).
DDE - a digital control system of the diesel engine.
Efforts of a tightening of carving connections
The moments of an inhaling of fixture are resulted in the text of the Head and on some иллюстрациях*. *Выделенные in the text a bold type the inhaling moments are subject to exact observance; the efforts not allocated with a bold type are resulted only roughly
System of release of the fulfilled gases
Reception pipe to a final collector	30 Nm
Fastening to a triangular flange	20 Nm
Collar of the additional muffler	15 Nm
The holder of the muffler to Manual transmission, carving М8	20 Nm
Plancks of fastening to the bottom	20 Nm
Final collector
Models 316i, 318i, 320d
М6	10 Nm
М7	15 Nm
Models 320i, 323i, 328i
М6	10 Nm
М7	20 Nm

The fuel system consists of a fuel tank, топливопроводов, the filter, the fuel pump and system of injection of fuel.

The fuel tank has two chambers. The tank is located under back seats. The available stock of fuel is shown to the driver on the panel of devices. And the stock of fuel for each chamber is measured by the separate gauge. The microprocessor in the block of the panel of devices counts the current maintenance of fuel on the basis of impulses of injection, speed of movement and electric signals of the lever gauge.

Ventilation of a fuel tank is carried out through the closed system of removal of air. At the petrol engine harmful steams of gasoline gather in an adsorber and move under the control in the engine.

Receptions of economic operation of the car

Essential influence on the fuel expense renders style of driving of the car. Some councils about reasonable operation of the car are more low resulted:

- After engine start at once get under way from a place even if it occurs on a frost.
- At a stop of the car lasting more than 40 with switch off the engine.
- Move always on as much as possible high transfer.
- At movement on the big distances whenever possible support uniform speed. Avoid movement on high speeds. Operate the car circumspectly. Without need do not brake.
- Do not transport on the car superfluous cargo. The luggage carrier established on the car, for example, on a roof whenever possible remove.
- Check pressure of air in tyres. Do not suppose excessive pressure decrease.