Why can t the car run at 80 kilometers?

The car can't go up at a speed of 80 miles, in this case, it is recommended to check whether the car existsThe engine lacks cylinders, or because of the engineCarbon depositsLack of power due to too much. During the discharge process of the spark machine, when it reaches a certain distance, the impulse voltage applied to the electrode and the workpiece instantly breaks down the discharge medium (spark oil) to form a discharge channel, which also produces a spark and starts to discharge.

A large amount of heat energy is instantaneously concentrated in the discharge channel, and the temperature can be as high as 10,000 degrees Celsius.

Above, the surface of the workpiece is melted, gasified, and splashed into the processing fluid, which quickly solidifies into discharge slag, which is carried away by the flowing working liquid. However, when the metal particles between the electrode and the workpiece are not completely carried away by the machining fluid, ionization cannot be completely eliminated.

Preventive clearance

In the past, when all kinds of cleaning agents were not available, the only way to remove carbon deposits was to decompose the engine, but in the past, most vehicles were still equipped with carburetors with large fuel injection, as long as the carbon deposits were not serious enough to hinder the operation of the valves, the engine was not obviously affected by carbon deposits, so there were not many cases of decomposing the engine specifically for removing carbon deposits.

With the increasingly stringent automobile exhaust emission standards in various countries, carburetors are gradually replaced by injection fuel supply systems with more accurate fuel injection. The fuel injection system controls the amount of fuel injected more accurately, and the absorption of oil and gas by carbon deposits will seriously affect the power performance of the engine, and even make the fuel injection system unable to operate. Therefore, the removal of carbon deposits from the intake valves and combustion chambers is part of the maintenance program for the injected fuel supply engine.

This problem may be caused by three types of problems: oil circuit failure, circuit failure, and mechanical failure. The common problem of oil circuit failure is that the injector is blocked, and the oil circuit should be dredged in time when this situation occurs. Circuit failures are most likely caused by the failure of the air flow meterSpark plugsThe same can happen if you can't ignite.

Mechanical failures are more extensive, and poor engine airtightness is the most common problem that causes weak acceleration in sharp acceleration, and it is best to replace the piston rings.

Check if the speed control system has set a maximum speed limit of 80 km/h, and try to press the speed limit button to lift the speed limit. If the problem is still not solved, we can pay attention to whether the vehicle is in a relatively high state, and if so, prove the vehicle transmission.

It may not be possible to move up to the highest gear, so the top speed of the car is greatly affected.

The car continues to idle.

High processing method.

1. When the engine water temperature is low, the air conditioner is turned on, and the engine voltage is low, the ECU program design should appropriately increase the idle speed, which is normal, if the engine water temperature is normal, and the idle speed is high without turning on the air conditioner, it means that the system is faulty, which may be an electronic control system or a mechanical system failure.

2. If there is a mechanical failure with high idle speed, we must pay attention to check whether there is air leakage in the inlet pipe and vacuum pipe.

Falling off, damaged, and damaged intake pipes (Volkswagen engine intake manifolds are mostly rubber tubes). Because the engine intakes very little air at idling, if there is an air leak entering, it will cause high idle speed.

3. For cleaning the throttle.

The idle speed control valve may be high after starting, which is a learning process for the computer, because the engine idle speed will drop after the throttle and idle control valve are dirty, and the ECU will control the idle control valve or throttle opening to increase the air intake in order to stabilize the idle speed, so as to stabilize the idle speed. After cleaning, the ECU also controls the air intake according to the original opening, and the engine idle speed will increase.

Dear, hello, the car can only run 80 yards at the fastest because of the engine carbon deposit, at this time the engine output of the power is not enough to accelerate the vehicle, then there is a phenomenon of weak acceleration. It may also be because there is a problem with the fuel system of the car, the fuel consumption cavity of the car is not sufficient, and the power obtained by the vehicle acceleration cannot support the vehicle to continue to accelerate, which naturally changes the above situation. If the ignition system or three-way catalytic converter of the car itself fails, it is easy to cause the vehicle to accelerate weakly when driving to a certain speed.

In addition, the quality of the car fuel itself does not meet the standard, or the use of lower models of car fuel may also occur in the above situation.