就是冷車啟動後意速不穩，聽到發動機突突的聲音，發動大家可能在平時都遇到過這樣的問題機排出的尾氣還有很大的生油的味道，著車一會就好了，時間長的可能需要幾分鐘，短的可能幾秒就好了。
你知道問題出現在哪嗎?平時保養的時候應該注意什麼呢?
其實大部分是由下面這兩種主要原因導致的:
1、節氣門、空氣流量計積炭過多
節氣門與空氣流量計還是比較容易髒的，現在的汽車大部分都是電子節氣門，一點積炭可能就會對其造成影響，節氣門積炭過多會造成加油門犯卡，動力嚴重下降，意速不穩等情況!
空氣流量計髒了，造成空氣流量信號錯誤，進氣量決定噴油量，直接導致噴油不準確，不僅油耗會增加，動力更是嚴重不足!所以說換空濾很重要，還有別忘記最好三萬公里清洗一次!在空氣濾芯和進氣軟管中間這個就是空氣流量計 (紅圈裡面)
2、氣缸燃燒室，活塞積炭太多
氣缸的燃燒室裡面積炭太多，會對汽油有一定的吸附作用!所以點火啟動的時候時間會延長那麼點點!
再就是積炭太多，大多會形成與氣門、活塞環上面，間接造成缸壓不夠!冷車啟動就容易怠速不穩，熱車就好!
平時汽車怠速不穩的原因可能很多，像是真空漏氣、火花塞壞掉等都可能會有，但是跑一兩萬公里就出現上述問題，肯定不是哪個零件壞了，可能是平時保養不徹底!
提醒大家在做好保養的同時，一定要對發動機的積炭清洗、節氣門清洗引起重視，跑的公里數越多越知道其重要性!
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It is the cold start after the intention of the speed is not stable, hear the engine burst sound, the engine we may have encountered in the ordinary problems of the machine exhaust gas and the smell of raw oil, the car will be good, long may take a few minutes, the short may be a few seconds to good.
Do you know where the problem is? What should you pay attention to when maintaining your car?
Most of the problems are caused by the following two main reasons.
1. Excessive carbon build-up on the throttle valve and air flow meter
Throttle and air flow meter is also relatively easy to dirty, most of the cars now are electronic throttle, a little carbon accumulation may have an impact on it, throttle carbon accumulation too much will cause the fuel door card, a serious drop in power, speed instability and other situations!
A dirty air flow meter will cause the air flow signal to be wrong and the amount of air intake will determine the amount of fuel injected, which will directly lead to inaccurate fuel injection, not only will fuel consumption increase, but power will also be seriously lacking! So it's important to change the air filter and don't forget to clean it once every 30,000 km! In the middle of the air filter and air intake hose is the air flow meter (inside the red circle)
2, cylinder combustion chamber, piston carbon accumulation too much
Cylinder combustion chamber inside too much carbon, will have a certain adsorption effect on gasoline! So the ignition start time will be extended a little bit!
Then there is too much carbon, most of which will be formed with the valve, piston ring above, indirectly causing cylinder pressure is not enough! Cold car start is easy to idle unstable, warm car is good!
There may be many reasons why the car idles unstably, such as vacuum leaks, broken spark plugs, etc., but if the above problem occurs after 10,000 to 20,000 kilometres, it is definitely not a bad part, it may be the usual maintenance is not thorough!
The more kilometres you run, the more you know the importance of cleaning the engine's carbon and throttle.
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