E30 series BMW 3

since 1983-1994 of release

Repair and car operation

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 It is good, if you have a car in which simple and out-of-date technical solutions – classical "Zhiguli" are used, "Muscovite" and "Volga", – it is possible to address safely to the mechanics having experience in area of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.