What is the lack of power in the car?

The most likely failure of engine power decline is spark plug failure. When the spark plug is turned off or caught fire, the combustible mixture entering the engine cylinder can't burn completely, or even can't burn, which will lead to the poor operation of individual cylinders or all cylinders of the engine, and then lead to the decline of automobile power.

Second, the engine's serious carbon deposition leads to a decline in power.

Another reason for the decline of engine power is carbon deposition. The carbon deposit that causes the engine power to drop is divided into two parts, one is the carbon deposit in the cylinder and spark plug, and the other is the carbon deposit in the throttle and intake. There is an essential difference between the two. Here, carbon deposition in spark plug is not emphasized, but carbon deposition in cylinder is emphasized. When the carbon deposition in the cylinder is serious, the combustion effect of the combustible mixture in the cylinder will become worse, resulting in insufficient combustion and the volume of the combustion chamber may become smaller, thus affecting the power of the automobile engine.

Third, the engine has poor air intake and exhaust.

The throttle power drop caused by carbon deposition mentioned above belongs to the fault of intake and exhaust system, but this small series wants to emphasize the engine power drop caused by the blockage of air filter and three-way catalyst. First of all, after the air filter element is blocked, the air intake is not smooth, and the combustible mixture in the cylinder is too rich to burn completely, which further reduces the power of the engine.

Fourth, poor oil products lead to insufficient engine power.

After talking about the power drop caused by many engine parts, let's talk about why inferior oil products can also cause engine power drop. The most direct influence of inferior oil is the combustion effect. Insufficient combustion leads to insufficient engine power. In addition, inferior fuel will increase the content of harmful gases in engine exhaust gas. At the same time, more "toxic" substances will lead to excessive working pressure and high temperature of the front oxygen sensor, which will seriously reduce the engine power.