E46 series BMW 3

since 1998 of release

Repair and car operation

Power supply systems, injection and release

Specifications

Separate characteristics are provided also in the text of Head and in case of obligation of their performance are allocated with a bold print

Fuel
Petrol engines
316i	unleaded, AI 95 is not worse
318i	unleaded, AI 95 is not worse
318i	unleaded, AI 983) is not worse
323i	unleaded, AI 983) is not worse
328i	unleaded, AI 983) is not worse
330i	unleaded, AI 983) is not worse
M3	unleaded, AI 983) is not worse
3) Filling by AI 95 gasoline with insignificant decrease in engine capacity is possible. AI 91 can be applied only in exceptional cases.
Diesel engines
Diesel fuel on DIN EN 590	Tsetanovoye number not less than 49
Do not use biodiesel fuel (methyl air of rapsovy oil)
Tsetanovoye number characterizes ability of diesel fuel to spontaneous ignition.
Operation in winter conditions
winter diesel fuel which depending on its brand provides continuous work of the engine at temperature to - 15°С or to - 22°С.
Heating of the fuel filter
The car is equipped with the device of heating of the fuel filter. Thanks to it - 15°С, it is possible to use the fuel calculated on its application at temperature to at temperature approximately to - 25°С. If at air temperature below - 25°С fuel became so dense that the engine is not started, let's to the car some time stand in a warmed room enough. To diesel fuel it is not necessary to mix the various additives increasing its fluidity. At temperature drop of external air is lower - 9°С to summer diesel fuel it is possible to add kerosene (in % from total volume)
From–9 to – 15°С	10 %
From–15 to – 25°С	30 %
Below – 25°С	50 %
At temperature drop of external air is lower - 20°С to winter diesel fuel add means of reduction of viscosity or kerosene (in % from total volume)
From–20 to – 26°С	10 %
From–26 to – 31°С	30 %
Below – 31°С	50 %
Capacity of a fuel tank
Volume	63 l
including 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 the BMW engine.
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 given in the text of Head and on some иллюстрациях*. *vydelenny in the text a bold print the moments of an inhaling are subject to exact observance; the efforts not allocated with a bold print are given only roughly
System of production of the fulfilled gases
Reception pipe to a final collector	30 N • m
Fastening to a triangular flange	20 N • m
Collar of the additional exhaust silencer	15 N • m
The holder of the exhaust silencer to RKPP, carving М8	20 N • m
Fastening levels to the bottom	20 N • m
Final collector
Models 316i, 318i, 320d
М6	10 N • m
М7	15 N • m
Models 320i, 323i, 328i
М6	10 N • m
М7	20 N • m

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 dashboard. And the fuel stock for each chamber is measured by the separate sensor. The microprocessor in the block of the dashboard counts the current content of fuel on the basis of impulses of injection, speed of movement and electric signals of the lever sensor.

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

Receptions of economic operation of the car

Essential influence on fuel consumption renders style of driving of the car. Some councils on reasonable operation of the car below are given:

- 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 the highest transfer.
- At movement on 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 tires. Do not allow excessive pressure decrease.