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Analysis of the Causes of Insufficient Engine Power and Exhaust Black Smoke
Release Date: 2018-01-26

The engine has insufficient power and uneven speed, and the exhaust pipe emits thick black smoke. There are two kinds of phenomena: one is continuous black smoke; the other is intermittent black smoke, and the engine shakes.

⑴ Reason

The engine is underpowered and continuously emits black smoke. It is because most or all cylinders of the engine supply too much fuel, the fuel-air mixing ratio is out of balance, and there is a severe lack of oxygen during combustion. Exhaust gas is formed together. If the exhaust pipe emits intermittent black smoke and is accompanied by a "burst" sound, it means that the individual cylinders are not completely burned. The reasons are summarized as follows:

① Improper commissioning of the fuel injection pump leads to excessive fuel supply and incomplete combustion.

② The injection quality of most injectors is poor.

③ The fuel supply is not correct.

④ The opening height of the intake valve decreases and the opening time is delayed, resulting in insufficient air intake.

⑤ The air filter element is too dirty or the air filter is installed incorrectly, making the air not smooth.

⑥ Poor fuel quality.

下降 The booster's boosting efficiency is reduced.


Jiangsu Xingguang Power Generation Equipment Co., Ltd. (Shandong Xingguang Generator)

Address: Headquarters: No. 2 Xingguang Road, Guxi Town, Taixing City, Jiangsu Province Branch: 3-1-2301, Hengda Yayuan, Qingdao West Road, Yinan District, Jinan City, Shandong Province

Phone: 18815316699

Record number: Su ICP No. 13060714

Technical Support: Jingchuang Network