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?


14.13. "Eats" much, but silently goes


If the engine is badly started, poorly pulls and spends fuels much, – the hitch can appear at all in of what first you think. Simple, apparently, the situation from the point of view of definition of the prime cause is the most artful. Many bravely begin independent search, without understanding that these manifestations can be a consequence of a number of the reasons – from elementary to rather serious. It is good, if you have a car in which simple and out-of-date technical solutions – classical "Zhiguli" are used, "Muscovite" and "Volga", – it is possible to address safely to the mechanics having experience in area of repair of similar cars.

But having replaced the car with more modern, many motorists continue to address to the same masters. And they do not have enough courage to admit that they do not understand difficult processes in fuel systems and electronic schemes of ignition. They look a spark at breakdown, punching thus transistors, isolation of windings of the reel, high-voltage wires, and "protorivy" current-carrying paths on covers and distributor begunka. Without solving a problem, such mechanics exhaust "illness" inside. And as a result the owner all the same goes to professionally prepared engineers. But car "treatment" already is considerably complicated.

Experts quite often get to a situation when after long work even by means of devices it is possible to understand nothing. And only later time it becomes clear that previous "clever man" tightened up jets in the carburetor or twisted everything in an injector, and at the end broke its tightness or burned the pressure sensor.

The list of the possible reasons leading to increased fuel consumption and decrease in capacity is very rich. And except them there is a row uncharacteristic, but often meeting malfunctions, such as прогар the piston, fuel hit in oil, failure of one of sensors of temperature of system of injection, thermostat failure, a pereputyvaniye of vacuum tubes, destruction of one of laying of the carburetor, piston rings or piston partitions.

Diagnostics is necessary for making without dismantling, the chance only for a while otherwise is great to eliminate a consequence or even to add an existing problem new, sometimes more difficult.

For example, the reasons leading to decrease in capacity of a spark, there is a lot of. If diagnostics is made on multipurpose the motor-testore, on its screen at once it is possible to define, what shortcoming is available. In any other way it is impossible to estimate compliance of a form of iskroobrazovatelny process of that at which there is a complete combustion of fuel on various operating modes.

The situation when, having found in the engine signs of abnormal work is widespread, the motorist goes to the mechanic. That, having measured a compression of the engine and having found compliance to norm, starts to regulate both the carburetor, and ignition system, achieving steady work. Sometimes it is possible. The engine is regularly got, ceases глохнуть, but thus draft and fuel consumption leave much to be desired. In what a mistake?

In the worn-out engine often there is a leakage of epiploons of valves. Oil proceeding on pistons leads to artificial compensation of the gaps which have arisen at wear of pistons, rings and cylinders. And at measurement of a compression false testimonies turn out. Elimination of this malfunction after the "repair" made by the mechanic, considerably is complicated because of need of restoration of initial adjustments.

The return situation when the owner unfairly "plunge" into major maintenance though would be to replace the same epiploons enough is very widespread also that in 10 with superfluous time is cheaper.

Unfortunately, still in the market of servicing of cars equal division into the stations meeting modern requirements for qualification, technical and cultural service, and on splinters of sadly memorable Soviet car-care center remains approximately. Therefore car owners should familiarize with a technical center on which hole they put the car attentively. And not so much with cost of services, how many how, than and in what conditions the car will be diagnosed and under repair.