What causes a car to lose gas?

A car with a loss of throttle is a phenomenon where the car suddenly loses speed and acceleration when accelerating or pressing the accelerator. This phenomenon can occur when the engine power is unstable or the fuel supply is not sufficient, causing the thrust generated to be insufficient. Therefore, a car with a loss of throttle will greatly affect the operating power and inherent acceleration ability.

According to experience, if the car has one of the above errors, most of the faulty parts should be cleaned or replaced. When seeing signs of a car losing throttle, the owner should check and handle it soon, because the longer the error is left, the more serious it will be, not only affecting the engine's life but also easily leading to many dangerous situations when driving, especially when overtaking or climbing a hill because the car does not have enough power to accelerate properly.

What are the causes of car failure?

Insufficient fuel supply to the combustion chamber

One of the most common causes of a car losing gas is insufficient fuel supply to the combustion chamber, leading to problems with the engine ignition process. There are many causes, the most common of which originate from:

Fuel line:The pipeline will help bring fuel from the tank through the filter, injector and into the combustion chamber. If the pipeline system has problems such as leaks, it will greatly affect the amount of fuel going into the combustion chamber.

Fuel pump:When the fuel pump (gasoline motorbike) or high pressure pump (diesel motorbike) has problems such as a weak pump, the amount of fuel pumped into the combustion chamber will not be enough, the engine ignition will not be effective, causing the vehicle to lose throttle.

Fuel filter:Fuel filters help remove impurities before fuel is pumped through the injector into the combustion chamber. Therefore, gasoline filters (gasoline vehicles) or oil filters (diesel vehicles) that work for a long time will become dirty and need to be cleaned and replaced periodically. If not, they can easily become clogged, causing insufficient fuel to be pumped into the combustion chamber, pumping early or late, reducing the efficiency of the combustion process, leading to conditions such as the vehicle losing power, emitting black smoke, etc.

Injector:Injectors are easily dirty after a period of operation. If not cleaned periodically, the injectors can become clogged, causing the amount of fuel injected into the combustion chamber to be not guaranteed. This is one of the reasons why the vehicle loses throttle, the vehicle stalls in the middle of the road...

Insufficient air supply to the combustion chamber

For the combustion process to take place, three conditions must be met: fuel, air and spark. Therefore, not only fuel but also insufficient air supply to the combustion chamber can reduce combustion efficiency, causing the car to lose gas.

Before air enters the combustion chamber, it must pass through the air filter. The air filter helps filter out dust and impurities to get clean air into the engine. After a long time of operation, the air filter is easily dirty. If not cleaned and replaced periodically, the air filter is easily clogged, affecting the amount of air entering the combustion chamber, leading to the situation where the car is running out of gas.

Exhaust gas cannot escape.

The car's loss of throttle can also be caused by the exhaust gas not being able to escape through the exhaust pipe. The cause is often due to the catalytic converter overheating, melting inside, reducing the exhaust gas's ability to circulate. When the exhaust gas cannot escape, it will be pushed back inside, reducing the efficiency of the combustion process. In addition, the exhaust pipe is deformed, such as being dented due to impact, which also affects the exhaust gas's escape process.

Sensor system malfunction

The sensor system plays a very important role in helping the ECU calculate the fuel level, air supplied to the combustion chamber as well as the spark plug ignition timing. If the sensor system malfunctions, the transmitted information will be inaccurate, causing the ECU to calculate incorrectly. This will lead to low combustion efficiency, leading to the car losing throttle.

Some sensors, when malfunctioning, can easily cause the vehicle to lose throttle, such as:

Camshaft sensor:The role of the camshaft sensor is to transmit information about the camshaft speed to the engine ECU. Thanks to that, the ECU will adjust the fuel combustion process accordingly. Therefore, if the camshaft sensor has a problem, the fuel combustion process will also be affected because the transmitted information is incorrect.

Mass air flow sensor:The role of the air flow sensor is to measure the amount of air entering, then transmit the information to the ECU. From this data, the ECU will calculate and adjust the amount of air-fuel mixture to the standard and adjust the spark plug ignition angle to the most reasonable. Therefore, when this sensor malfunctions, the combustion process will have problems, resulting in the vehicle being prone to a lack of throttle.

Oxygen Sensor:The role of the Oxygen sensor is to measure the concentration of oxygen in the exhaust gas and transmit the information to the ECU. From here, the ECU will know whether the fuel is burned completely or not to adjust the amount of fuel injected accordingly. If the Oxygen sensor is faulty, the transmitted information may be incorrect. This is one of the reasons why the car loses gas, the car is difficult to start, the car jerks when accelerating...

Broken timing belt

The timing belt plays a very important role in connecting the flywheels of the camshaft and crankshaft to help them work together. When the timing belt is worn, it will slip, which will greatly affect the engine ignition process. Because the worn, slipping belt can cause an engine cylinder to close or open early, leading to a misfire. This causes many serious effects on the engine, causing the vehicle to vibrate, the vehicle to lose throttle, etc.