Today, with the rapid development of the car industry, the requirements of car repair skills are constantly improving. Car engine is the power source of car, its structure is extremely complex, and the causes of hair pathogens are various. In view of the common faults of car engine, this paper summarizes the common faults and repair methods according to the experience of actual repair operation.

發動機常見毛病修理策略

Repair Strategy for Common Engine Faults

（一）控制潤滑油耗費

(1) Controlling Lubricant Consumption

發動機正常運行不可避免地要耗費一定量的潤滑油，潤滑油耗費反常往往對應著發動機的某種毛病。出現潤滑油耗費反常，首要應該查看油質、油量，必要時更換潤滑油，避免因油質問題造成發動機不能正常運行。在掃除油質問題后，應該逐個排查相關零部件，或許因為零部件嚴重磨損，配件間隙過大或許機油壓力過高，導致機油上躥進焚燒室。而機油的滲漏首要是因為密封墊變硬老化，氣門卡死。

The normal operation of the engine inevitably consumes a certain amount of lubricating oil. The abnormal consumption of lubricating oil often corresponds to some faults of the engine. In case of abnormal consumption of lubricating oil, the first thing is to check the quality and quantity of oil, and change the lubricating oil when necessary, so as to avoid the abnormal operation of the engine caused by oil quality problems. After cleaning up the oil quality problems, we should check the relevant parts one by one. Perhaps because of the serious wear and tear of the parts, the gap between the parts is too large or the oil pressure is too high, the oil leaps into the incinerator. The leakage of oil is mainly due to the hardening and aging of the sealing gasket, and the valve is stuck.

（二）及時監測發動機過熱

(2) Timely monitoring of engine overheating

冷卻液溫度反常時，會在轎車儀表盤上報普提示，在發現冷卻液溫度反常時，應泊車查看，看冷卻液是否走漏。需要注意的是，熱車時不能立刻停機，也不能立刻加注冷卻液，而是要等發動機溫度正常后再操作。假如冷卻液不少，應排查發動機節溫器，風扇散熱器毛病。發動機過熱問題，需要轎車駕駛員把握根本的知識與修理辦法。要對發動機進行定期保養檢測。

When the temperature of coolant is abnormal, the general tips will be reported on the dashboard of the car. When the temperature of coolant is abnormal, parking should be checked to see if the coolant leaks. It should be noted that the hot car can not stop immediately, nor can it inject coolant immediately, but to wait until the engine temperature is normal before operation. If there are many coolants, we should check engine thermostat and fan radiator. The problem of engine overheating requires car drivers to grasp the basic knowledge and repair methods. The engine should be regularly maintained and inspected.

（三）消除發動機發生的特殊氣味

(3) Elimination of special odors from engines

車輛在使用過程中，假如發現發動機艙有刺鼻的氣味或燒焦味，應立即泊車，查看發動機周圍是否有線路軟化或被燒焦，對燒焦或短路的線路及時修正，避免更大的安全事故。掃除線路毛病之后仍存在難聞氣味，應考慮是不是有附著在發動機外表的油液、異物受熱蒸發或許焚燒之類的因素。

During the use of vehicles, if there is a pungent or burning smell in the engine compartment, parking should be immediately checked to see if there are any softening or burning lines around the engine, and the burning or short-circuit lines should be corrected in time to avoid greater safety accidents. After wiping out the line faults, there still exists bad odor. Consideration should be given to whether there are factors such as oil, foreign body heated evaporation or incineration attached to the engine surface.

（四）排氣煙色反常毛病排查

(4) Investigation of abnormal exhaust smoke color

發動機起動運行就會有燃料焚燒，就會發生尾氣排放，根據尾氣的色彩是能夠分辯動身動機部分毛病的。尾氣呈黑色時，一般是因為混合器過濃，燃料不能被完全焚燒，這種狀況要查看與進氣相關的傳感器。尾氣色彩呈白色時，一般是因為燃油氣化不良，沒有焚燒便從排氣管排出火花塞毛病和燃油質量不良的或許性較大。若尾氣呈藍色，則要解決燒機油問題，或許是火花塞或氣門油封出現問題，應及時排查，必要時更換新件。

When the engine starts to run, there will be fuel burning and exhaust emission. According to the color of the exhaust, it can distinguish some faults of the starting engine. When the exhaust gas is black, it is usually because the mixer is too thick and the fuel can not be burned completely. This situation requires looking at the sensor associated with the intake. When the exhaust gas color is white, it is usually due to the poor gasification of fuel oil. Without incineration, spark plug defects and poor fuel quality may be discharged from the exhaust pipe. If the exhaust gas is blue, it is necessary to solve the problem of burning engine oil, perhaps spark plug or valve seal problems, should be timely checked, if necessary, replace new parts.

三、總結

Three, summary

把握常見的發動機毛病修理辦法，能夠下降行車安全隱患，同時做好定期保養保護，能夠使發動機使用壽命更長。

Grasping the common repair methods of engine faults can reduce the hidden dangers of driving safety, while doing a good job of regular maintenance and protection, can make the engine service life longer.