BMW 3 series E46

Since 1998 of release

Repair and car operation

The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
- Current leaving and service
   Current leaving
   The general information on adjustment
   Check of levels of liquids
   Check of a condition of tyres and pressure in them. A designation of tyres and disks of wheels
   Replacement of impellent oil and the oil filter
   Replacement of a filtering element of the air filter
   Checks of brake system
   Replacement of an element of the filter of air of salon
   Condition check приводных ridge belts
   Check of a condition and replacement of hoses of an impellent compartment
   Check of functioning of system of cooling and frost resistance of a cooling liquid
   Check of a condition of system of release of the fulfilled gases
   Check of level of oil in a manual box of a gear change
   Check of a condition of components of a suspension bracket and steering
   Check of a condition of protective covers of power shafts
   Check of level of a liquid of system of hydrostrengthening of a wheel
   Visual check of a body and its bottom
   Check of seat belts
   Rotation and replacement of wheels
   Condition check, replacement of brushes and adjustment of a corner of screen wipers
   Check of a condition of the battery, care it and gymnastics
   Replacement of a brake liquid
   Check and replacement of spark plugs
   Check of fuel system, replacement of the fuel filter. Operation of diesel model in the conditions of winter
   Greasing of loops and locks of doors
   Replacement of a battery of a key of remote control
+ The engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ Engine electric equipment
+ Manual transmission and transmission a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes

Check and replacement of spark plugs

The tools necessary at replacement of spark plugs

1 — the Candle head - Is equipped by the special elastic loose leaf excluding possibility of casual damage of a porcelain insulator at a reversing of a candle.
2 — the Dinamometrichesky key - without entering into number of obligatory tools, provides a reliable guarantee of correctness of effort of a tightening of spark plugs.
3 — the Ratchet drive - Is applied in the complete set with a candle head and torque a key.

4 — the Extension piece - Depending on model and a complete set access to spark plugs can be limited by its auxiliary units in various degree, therefore application of extension pieces of the corresponding form and a design will allow to facilitate procedure performance appreciably.
5 — the Adaptation for measurement and updating of interelectrode backlashes of spark plugs - Is issued some this sort of types of tools - make sure that the tool is completed щупом, to backlashes of candles of your car corresponding on the size.

1 Before the work beginning prepare all necessary tools which include a replaceable head of a candle key and a set of edges probe. Some manufacturers of spark plugs deliver special tools for measurement of a candle backlash.
2 Best way of replacement of spark plugs is preliminary purchase of new candles, adjustment of their backlash and replacement of each candle by turns. At purchase of candles very important to choose those candles which are intended for the engine of your car. The information on them can be received in Specifications.
3 having near at hand new candles, allow to the engine to cool down completely before the beginning of removal of the old. In this time it is possible to examine new candles on presence in them of defects and to check up candle backlashes.

4 Candle backlash is checked by insertion of a measuring instrument of the necessary thickness between electrodes on the candle end. The backlash should correspond specified in Specifications. The delay should concern only each of electrodes. If the backlash does not correspond to norm, slightly turn in the bent part of an electrode by means of a regulator with notches before achievement of necessary size of a backlash.

At adjustment of a backlash of a new candle turn in only the basis of an electrode of weight, without touching its end. If the weight electrode is displaced concerning the central electrode, by means of a regulator with notches level them. Check up a porcelain insulator on presence of the cracks specifying in those, it is necessary to replace a candle.

Replacement свеч should be made only on cold or slightly warm engine. If candles are turned out on the hot engine, the carving in apertures of a head of the cylinders executed from easy metal can be damaged.

5 Switch off ignition.
6 Engines 316i, 318i: Расстыкуйте a socket of candles in a vertical direction. Thus it is necessary to pull upwards for a cable, instead of for the tip.

Engines 320i, 323i, 328i

7 Remove an element of the air filter of ventilation of salon of system of heating and the conditioner, address to Section Replacement of an element of the filter of air of salon.

8 Disconnect the cable channel at the bottom part of the case of the filter-2, having opened clips and take out a cable.

9 Turn out screws-1 screw-driver Torx Т30 and remove the bottom part воздухосборной boxes-2.
10 Remove a stopper of an aperture for заливания oils.

11 Hook a screw-driver and remove covers of bolts of fastening (an arrow on an accompanying illustration), turn out two bolts which are under them.

12 Rasstykujte a socket of each coil of ignition for what pull upwards for tips.

13 Turn away bolts of fastening at each coil of ignition, cautiously take out coils.

Pay attention to tapes of grounding of a cover of a head of cylinders at coils of cylinders 1 and 6. At installation they should be again fixed on the former places.

14 If it is possible, blow compressed air of a niche of spark plugs that the dirt has not got to apertures of cylinders.
15 Turn out candles a corresponding candle key. Thus watch that the key did not warp as it can lead to damage of a ceramic insulator.


16 Check up a condition of spark plugs. Compare the taken out candle with shown on pictures in Section of System of a charge and start, it will give you the helpful information on the general condition of the engine. The greasy candle specifies in faults in its work or bad consolidation of piston rings. To check up presence of mechanical defect of a candle it is possible with the help компрессометра, address to corresponding section.


17 Screw spark plugs by hand by means of a candle key to прилегания to a head of cylinders. Attention: Watch to warping a candle.
18 Tighten candles the moment 25 Nm.

Thus do not warp a key not to damage a ceramic insulator.

If available is not present динамометрического a key, tighten new spark plugs on a corner 90 (1/4 turns). The candles which were in the use should be tightened only on a corner 15 .

19 Engines 316i, 318i: Put on the tip each candle. The tip should be fixed distinctly. Do not confuse tips, they are numbered, and the first cylinder is in front in a movement direction.

Engines 320i, 323i, 328i

20 Put on ignition coils candles and fix them. Fix tips on coils bracket. Fix grounding tapes on coils of ignition of cylinders 1 and 6.

21 Fix the tyre of weight-3 connecting plates of coils to a forward bolt of the coil of ignition. The tyre of weight-1 cable mines should be connected bolts to a connecting plate-2 spark plugs.

22 Fix bolts an engine cover.
23 Screw a mouth cover заливания oils.
24 Fix the bottom part воздухосборной boxes.
25 Lay a cable in the cable channel at the bottom part воздухосборной boxes. Close the cable channel.
26 Establish into place an element of the filter of air of system of heating and the conditioner, address to Section Replacement of an element of the filter of air of salon.

Restoration of a carving of spark plugs

In the presence of carving damages under spark plugs it is necessary for restoring. For this purpose there is a corresponding tool and the repair complete set, for example, firms BERU. The special drill drills an old carving for what to remove a head of cylinders it is not necessary. Then in a head the new carving is cut and the candle with a special carving insert is rolled. The insert sits reliably and tightly.