BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 1. Maintenance instruction
- 2. Maintenance
   2.2. The recommended lubricants and liquids
   2.3. Frequency of service
   2.4. Features of routine maintenance of the car
   2.5. General information on additional maintenance
   2.6. Check of level of liquids
   2.7. Check of a condition of tires and pressure in tires
   2.8. Replacement of oil in the engine and an oil filter
   2.9. Check and restoration of level of liquid in a wheel
   2.10. Check of level of liquid in automatic transmission
   2.11. Shift of wheels
   2.12. Check and replacement of hoses in a motor compartment
   2.13. Check, adjustment and replacement of belts of the drive of hinged units
   2.14. Check and adjustment of turns and quality of mix (SO) of idling
   2.15. Check of a state and battery charging
   2.16. Check and replacement of candles
   2.17. Check of high-voltage wires, runner and cover of the distributor
   2.18. Check of level of oil in the manual transmission
   2.19. Check of level of oil in the main transfer
   2.20. Check and adjustment of gaps in valves (except the M40 engine)
   2.21. Draft of a butterfly valve
   2.22. Replacement of the air filter
   2.23. Check of fuel system
   2.24. Check of the cooling system
   2.25. Check of the exhaust system
   2.26. Check of shock-absorbers, suspension bracket and steering
   2.27. Check of covers of half shafts
   2.28. Check of brakes
   2.29. Check of brushes of screen wipers
   2.30. Replacement of liquid in automatic transmission and the filter
   2.31. The cooling system – replacement of liquid and washing
   2.32. Replacement of the fuel filter
   2.33. Replacement of oil in the manual transmission
   2.34. Replacement of oil in a case of the main transfer
   2.35. Check of system of catching of vapors of gasoline (EVAP system)
   2.36. Installation of the light alarm system of need of servicing
   2.37. Replacement of a gear belt
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Useful tips


2.17. Check of high-voltage wires, runner and cover of the distributor


Characteristic defects of a cover of the distributor
1. Breakage on turrets of wires

2. Cracks

3, 5. Breakdown

4. Erosion of electrodes

6. Wear of a piece of coal

Characteristic defects of the runner
1. Loss of elasticity of a spring

2. Contact corrosion

3. Zadevaniye for a cover

4. Cracks

High-voltage wires of spark plugs should be checked (and if necessary to change) along with replacement of candles.

The simplest way of check consists in survey of wires on the working engine in the darkened garage. At detection of a luminescence (breakdown) of a wire replace. Check a condition of a cover and the runner of the distributor.
1. Disconnect the battery from weight.
2. For check and cleaning of wires disconnect each wire separately.
3. Disconnect a wire from a candle, holding a tip.
4. Check existence of corrosion on the socket of a tip of a wire and on a candle electrode. Check durability of demountable connection, having dressed a tip of a wire on a candle and having shaken it. At leaky connection draw in contact petals.
5. Wipe wires. Strongly do not bend a wire as the conducting vein can break. At detection of cracks, traces of breakdown and a podgoraniye of a wire replace.
6. Disconnect a wire on a cover of the distributor and check a condition of contacts of wires and sealants.
7. Unscrew fastening screws (or wring out brackets) and uncover the ignition distributor.
8. Wipe a cover absolutely and check existence in and outside of a cover of cracks, traces of superficial breakdown (thin charred paths), wear, podgoraniye and weakening of contacts. At detection of such defects replace a cover and the runner.