Increased vibration of the engine at idle. The vibration of the diesel engine at idle

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2020-01-27 05:00:10

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During operation, the engine operates in different modes. One of those – it is idling. Is the engine running in neutral with the clutch disengaged. At this point, the flywheel is disconnected from the transmission. Torque transmission is not performed, that is, the motor is at idle (hence the name). If you are experiencing engine vibration at idle, this is a serious reason for the diagnosis. After all, healthy motor should not transfer the vibration to the body. In today's article we will discuss why this problem occurs and how it can be resolved.

What is the normal rpm?

If you reset the box to “neutral”, the tachometer needle will drop to 800-1000 rpm. This option may be slightly different on different engines, but it does not go beyond these limits. If the speed be less, the motor will simply stall. vibration of the car engine idlingBut the greater “blank” is harmful to the motor. So not only consumes a lot of fuel, but are stronger and wear out engine components. Next, consider the reasons why there is increased engine vibration at idle.

Making motor

A generic name, if the engine is not running one (and possibly several) of cylinders. On most passenger cars used inline 4-cylinder engines. So if one of them does not work, this problem is called ‘making’. As depressing the accelerator the revs will increase, and vibration is partially lost. But this does not solve the problem because motor power is reduced by 20-40 percent. Also increases and the fuel consumption (about the same). Engine vibration at idle will be transmitted not only to the body, but also on the wheel. This is especially noticeable when riding with a load (e.g. trailer).

It is Worth noting that the problem is dangerous not only uncomfortable driving and high fuel consumption. With this motor much wear items crank. In one of the cylinders supplied with fuel that is not burned, but only washes away the grease. In the end produced a strong scoring, worn ring. If you long to operate such a motor, it is possible to obtain the ellipse of the cylinder.

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How to solve the problem? Candles

First look at their condition. Elements out a specialized key and is tested. engine vibration at idleThis uses a small device in the form of a gun. How to use it? The cap should be worn on top of the candle (where is connected the high voltage wire) and the metal tip that the output of the gun – to attach to the side of where the thread. Then, press the trigger and look at the candle. If she provides the spark, so all good there. If not, then it is the cause of engine vibration at idle. The candle does not produce a spark, causing the mixture of waste is consumed, no ignited. In the diagnosis is to examine all the candles. This problem can be found in any of the cylinders (visually define “Troisi” cylinder impossible).

The Distributor, coil, wires

The Next problem – improper ignition. Thus, even when a normal candle can be gaps. The reason is a worn ignition coil either high-voltage wires. The last test is very simple – in the dark open the hood and with the engine running, inspect their condition. If of the wires out of the spark, so they “broken” and should be replaced. As for the coil, to determine the fault only when the installation is obviously working. It should be noted that the number of coils can vary depending on the design features of the engine (from 1 to 4 and more). increased engine vibration at idleAnother reason may be incorrect ignition timing. This happens on machines equipped with a timer. To adjust the parameter by turning its housing relative to the camshaft. Put POPS on the eyes. After adjustment accelerates the car to 60 kilometers per hour and include 4 th gear. The car should not detonate. If so, then the angle needs to be adjusted in the opposite direction.

Also making occurs because of incorrect position of the belt or timing chain. The latter tends to stretch. In the end, the shifted phase even in the case when the chain jumped even a tooth. You should check, the same as label and, if necessary, replace the drive. The chain is changed every 100-150 thousand, belt is 60.

The Vibration of the diesel engine at idle

As is known, in these engines, the mixture is ignited independently of the compression force. There are no coils and spark plugs. But what if there is vibration of the car engine at idle? The reason lies in the fuel supply. During this process answer in the injectors and the injection pump. The latter has a special adjusting screw. They exhibited the amount of supplied diesel fuel to maintain rpm.

Also, the vibration of the engine at idle occurs because of clogged injectors. They can correctly spraying fuel or to serve in limited portions. You can check them out via K-Line adapter (computer diagnostics). engine vibration at idleThe Program will show what the pressure inthe injectors in real time. The setting must not go into the negative and very different from neighboring nozzles. Optimal data – zero or one.

Features CSV

This is perhaps the most serious problem that can lead to vibration. vibration of the diesel engine at idlingSo, this problem occurs because of a cracked crankshaft or flywheel is worn down. This happens if the engine is regularly subjected to loads. Sometimes the cost of repair of crank mechanism comparable to the price of the contract of the motor.

Pillows

The vibration of the engine at idle may occur due to not correctly fixed power unit. In the end, there is a strong imbalance. The engine is fixed to the frame or body (if he is a carrier) by means of rubber cushions. Over time, they become loose, crack and deform. The problem is dangerous not only vibrations of the engine at idle, but straight of the box. If it is "automatic", it can get kicked. And the "mechanics" may be difficult to switch gears. engine vibration at idleUsually the car used three pillows. The two go to the motor and one on transmission. Engine vibration at idle can occur even after a failure of one of them. The element begins to rashlebyvat to 250 thousand kilometers. Compared to the warped flywheel or crankshaft this problem is not so bad. The cost of the new cushions is not more than a thousand rubles, and you can replace it yourself.

Conclusion

So, we figured out why there is increased vibration at idle in the engine of a car. As you can see, the causes can be very different – from small candles and a pillow to severe, associated with the crankshaft and the flywheel. In any case the problem needs to be urgently addressed. Otherwise serious wear and tear and will undergo other elements of the motor.


Article in other languages:

AR: https://tostpost.com/ar/cars/20839-increased-vibration-of-the-engine-at-idle-the-vibration-of-the-diesel-.html

BE: https://tostpost.com/be/a-tamab-l/38631-padvyshanaya-v-bracyya-ruhav-ka-na-halastyh-v-bracyya-dyzel-naga-ruhav.html

DE: https://tostpost.com/de/autos/39206-erh-hte-vibration-des-motors-im-leerlauf-die-vibration-des-dieselmotor.html

ES: https://tostpost.com/es/coches/38976-aumento-de-la-vibraci-n-del-motor-en-soltero-la-vibraci-n-del-motor-di.html

HI: https://tostpost.com/hi/cars/22569-increased-vibration-of-the-engine-at-idle-the-vibration-of-the-diesel-.html

JA: https://tostpost.com/ja/cars/20474-increased-vibration-of-the-engine-at-idle-the-vibration-of-the-diesel-.html

KK: https://tostpost.com/kk/avtomobil-der/38842-zho-ary-d-r-l-oz-alt-yshty-bos-d-r-l-dizel-oz-alt-yshty-bos.html

PL: https://tostpost.com/pl/samochody/40523-nadmierne-wibracje-silnika-na-biegu-ja-owym-wibracje-silnika-diesla-na.html

PT: https://tostpost.com/pt/carros/40085-o-aumento-da-vibra-o-do-motor-em-marcha-lenta-a-vibra-o-de-um-motor-a-.html

TR: https://tostpost.com/tr/arabalar/35543-a-r-titre-im-motoru-bo-ta-titre-im-bir-dizel-motorun-bo-ta.html

UK: https://tostpost.com/uk/avtomob-l/39325-p-dvischena-v-brac-ya-dviguna-na-holostih-v-brac-ya-dizel-nogo-dviguna.html

ZH: https://tostpost.com/zh/cars/44313-increased-vibration-of-the-engine-at-idle-the-vibration-of-the-diesel-.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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