The overbearing 2700 cold car began to shake at idle speed, but it stopped shaking after adding oil. The steering wheel was heavy and turned off. What is the reason?

The answer is: 1. Carbon deposition inside the engine is serious.

Often manifested as throttle carbon deposition, nozzle carbon deposition, spark plug carbon deposition, piston carbon deposition. When these carbon deposits accumulate to a certain extent, they will absorb the heat of combustion and even cause deflagration and detonation. If the nozzle is blocked, it will lead to poor atomization effect, which will not only consume oil, but also pollute the environment.

2. Ignition system problem.

Generally, spark plugs have too much carbon deposition and insufficient ignition voltage, which leads to flameout, even single cylinder or multi-cylinder flameout. The engine will shake due to lack of power, and it will be between flameout and fire when the shaking is serious.

3. The fuel pressure is unstable.

The fuel system includes fuel tank, gasoline filter, gasoline pump, oil-gas separator, oil pipe and fuel meter. If one of them has problems, blockage or oil leakage, it will lead to unstable oil pressure and intermittent engine power jitter. It is possible that the oil pressure will not shake when oil is supplied, but the present situation of no oil supply has not changed.

The internal parts of the engine are aging.

Usually this will only happen after the vehicle has been used for a certain number of years or mileage. Engine power will shake when it drops seriously. Usually, this kind of car is easy to shake at low speed, and the symptoms are improved to some extent after refueling, but it consumes a lot of fuel.

Response measures:

1. Clean engine carbon deposit. Common methods of carbon deposit cleaning include throttle carbon deposit cleaning, spark plug carbon deposit cleaning, nozzle carbon deposit cleaning, cylinder carbon deposit cleaning and so on. Some effects can be achieved by oil circulation cleaning, dry ice cleaning and walnut sand cleaning.

2. Clean or replace the air filter, fuel filter and oil filter as appropriate. A good filter element can filter most impurities, make the engine, make the fuel purer, make the engine oil cleaner and make the engine breathe more smoothly.

3. Spark plugs and fuel nozzles can be cleaned. If the replacement cycle is approaching, replacement is recommended. The new fuel nozzles need to be matched by computer and disassembled and installed in sequence.