E30 series BMW 3

since 1983-1994 of release

Repair and car operation

+ 1. Maintenance instruction
+ 2. Maintenance
+ 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. Good advice
   14.2. Changed numbers
   14.3. Purchase of the old car or mysterious set of figures and letters
   14.4. Durability of the car
   14.5. About parallelism of bridges of the car and the trailer
   14.6. Preparation of the car for winter
   14.7. Rule 35
   14.8. Choice of the second-hand car
   14.9. Engine oils
   14.10. That it is necessary to know, changing oil
   14.11. Emergence in deposit oil
   14.12 whether. It is possible to mix import oils?
   14.13. "Eats" much, but silently goes
   14.14. It is rather live, than it is dead …
   14.15. It is not got - good advice
   14.16. Visit to car-care center
   14.17. A gear belt for a drive of the mechanism of a gazoraspredeleniye
   14.18. Wear of pistons
   14.19. Valves
   14.20. Bearings of engines
   14.21. Engine pollution
   14.22. As the conditioner works and what to do, if it failed
   14.23. Conditioner: not only "pluses", but also "minuses"
   14.24. Rules of service of the conditioner
   14.25. It is not necessary to stir antifreeze with antifreeze …
   14.26. That it is necessary to know upon purchase of the air filter
   14.27. Engine overheat
   14.28. That it is necessary to know to the owner of the car with the injector engine
   14.29. Accumulator
   14.30. Possible malfunctions of the storage battery
   14.31. What to do with the failed generator
   14.32. The belt is guilty, and we blame the generator
   14.33. Catalyst
   14.34. Rub in one - or how to save the catalyst
   14.35. Probuksovochka
   14.36. Features of operation of brake system
   14.37. Malfunctions of brake system
   14.38. Brake liquids
   14.39. ABS: natural choice
   14.40. Rims
   14.41. We update rims
   14.42. Scheme of marking of a car tire
   14.43. Metal corrosion
   14.44. Automake-up
   14.45. What creaks?
   14.46. Hatch
   14.47. Safety cushion: troubles or pleasures?
   14.48. We fit well?
   14.49. Anticreeping "immunodeficiency"
   14.50. Why headlights grow dull
   14.51. "Galogenki"
   14.52. About the correct adjustment of headlights
   14.53. Electric motor
   14.54. From change of places "composed" changes nothing?


14.25. It is not necessary to stir antifreeze with antifreeze …


Quite often at operation of the second-hand foreign cars which have been just driven from abroad, motorists make mistakes which lead to the most pitiable results. How them to avoid? For example, if in the five years' foreign car driven under the order familiar motorists advise to you to check levels of all technical liquids and oils and if necessary to add them to norm, – it is not necessary to hurry up. Because during THIS MOMENT OWNERS of JUST BOUGHT FOREIGN CARS ALLOW ONE OF the MOST FREQUENT MISTAKES WHICH CAN LEAD TO ENGINE BREAKAGE. In particular, many facts of improper maintenance of system of cooling of the motor are known. So, if in the autumn, on the eve of the colds, cooling liquid usually change completely, on spring – only partially. And very often thus motorists add not so those liquids which are recommended for this model of a foreign car in cooling system. At the majority of them in system antifreeze is used, and our car owners fill in antifreeze or that too happens, – nonfreezing liquid for a washer of glasses. To what it leads? Here to you concrete example. In repair arrived BMW at which the engine constantly overheated. By the way, the car arrived after inspection to two authorized service centers. There to it several times changed thermostats, a pomp, temperature sensors, but cardinally to correct a situation it was not possible. It was necessary to suffer fairly while at last, the true cause of defect – a contamination of a so-called tunnel parootvodyashchy tube became clear. And there was it because of antifreeze mixture to antifreeze, and problems began for the second day after its dolivka in cooling system.

So, buying in the market or in motor show a second-hand foreign car, it is not necessary to trust especially to assurances of sellers that the car has training preselling preparation and liquid in system of cooling it is replaced. Change it independently better.

In practice such situations when engines with the considerable – under 300.000 km – run have quite small – no more than 50 % – wear quite often meet. At the same time there are a lot of cars with run to 100 thousand kilometers from which the engine already demands major maintenance. Their inspection shows that the main reason for strong wear is the overheat caused by any defects of system of cooling. Not all know that the system of indication of temperature of the engine possesses a certain lag effect. It means that the temperature of the motor can already exceed an admissible limit, and the arrow of the indicator did not enter yet into red forbidding sector. Therefore we advise: at the first signs of movement of an arrow of the device to border of a red zone stop all attempts to reach under the own steam the house. Know that after the termination of circulation of liquid in two-three minutes in a head of the block the steam stopper is formed and avalanche temperature increase begins. That, in turn, quite often leads to deformation of a head of the block, failure of knots and details of the gas-distributing mechanism.