對於電噴車而言（yán），免拆清洗時勿貪便宜目前市場（chǎng）上普遍采（cǎi）用的免拆清洗機清洗方式。其清（qīng）洗（xǐ）是按噴油嘴的數（shù）量進行收費，一般一瓶清（qīng）洗（xǐ）劑可（kě）以洗4個噴油嘴（zuǐ）。需要注意的各種清洗劑的熱值是（shì）不同的另外由於其中化學添加（jiā）劑（jì）的差別，劣質清洗劑在清洗過程中，會對噴油器的密封圈、三（sān）元（yuán）催化劑造成一定損害，而且長時間清洗對發動機的相關零部件有利。

For EFI vehicles, do not be greedy for cheap when cleaning without dismantling. At present, the cleaning method of non disassembly cleaning machine is widely used in the market. The cleaning is charged according to the number of fuel injection nozzles. Generally, a bottle of cleaning agent can wash 4 spray nozzles. The calorific value of various cleaning agents that need to be noted are different. In addition, due to the difference of chemical additives, inferior cleaning agents will cause certain damage to the sealing ring of fuel injector and three-way catalyst in the cleaning process, and long-time cleaning is beneficial to the relevant parts of the engine.

目前市場上的免拆清洗有三種：清洗劑清洗、免拆清洗機清洗和超聲波（bō）清洗。

At present, there are three kinds of non disassembly cleaning on the market: cleaning agent cleaning, cleaning machine cleaning and ultrasonic cleaning.

把清洗劑直接加入油箱裏（lǐ）進行清洗

Add the cleaning agent directly into the oil tank for cleaning

隻需要將（jiāng）合適的清洗劑加（jiā）入油箱即可。但是目前（qián）市場上（shàng）的清洗（xǐ）劑品種繁多，   此種方法簡便易行。且規格不一，質量差的清洗劑由於熱值不同一般都會偏大，燃燒時的溫度（dù）和（hé）壓力比汽油混合（hé）氣燃燒時要高，部件（jiàn）接受的熱（rè）負荷與機械負荷會增大）清洗過程中，容易對進排氣門、活（huó）塞、缸壁產生損害。

Just add the right cleaning agent to the tank. However, there are many kinds of cleaning agents on the market, so this method is simple and easy to operate. The cleaning agent with different specifications and poor quality will generally be larger due to different calorific values. The temperature and pressure of combustion are higher than those of gasoline mixture combustion, and the thermal load and mechanical load accepted by the components will increase).

北京汽修六廠（chǎng）闞科長表（biǎo）示：清洗過程因（yīn）為要洗掉（diào）缸內的積碳，   環保方麵。所以尾（wěi）氣排放肯定會暫時（shí）超標，清洗效（xiào）果越明顯，其排放的尾氣濃黑劇烈，同（tóng）時說明缸內的積碳已被大（dà）部分清洗（xǐ）掉了

Beijing No.6 automobiles repair plant section chief said: the cleaning process because to wash away the cylinder carbon, environmental protection. Therefore, the exhaust emission will certainly exceed the standard temporarily. The more obvious the cleaning effect is, the more black the exhaust will be. At the same time, most of the carbon deposits in the cylinder have been cleaned

全自（zì）動超聲波清洗（xǐ）機

Automatic ultrasonic cleaning machine

用清洗劑替代油料燃燒對（duì）缸內的積（jī）碳進行（háng）清洗，   免（miǎn）拆清洗機清洗的原理就是利用發動機本來係（xì）統的壓力（lì）及循環網絡。然後借排放係統排出。免拆清洗機的優點在於方便（biàn）快捷，而且對於噴油嘴的清洗效果明顯；缺點是進氣道的前（qián）一段清洗不（bú）到而且噴（pēn）油嘴的好壞也檢查不出來。對於新車而言（yán），其（qí）清洗效果一般（bān）可以達到80%左右，舊車”沒有依照一定裏程進（jìn）行經常清洗的效果稍差，但洗後百（bǎi）公（gōng）裏的效果還是很明顯的

The principle of the cleaning machine is to use the pressure and circulation network of the original system of the engine. It is then discharged by the discharge system. The advantage of the cleaning machine is that it is convenient and fast, and the cleaning effect of the fuel injection nozzle is obvious; the disadvantage is that the front section of the intake port can not be cleaned and the quality of the fuel injection nozzle can not be checked out. For new cars, the cleaning effect can generally reach about 80%. The effect of "old cars" is not as good as that of "old cars" which are not cleaned regularly according to a certain mileage, but the effect after washing for 100 km is still very obvious

全自動超聲波清洗（xǐ）機

Automatic ultrasonic cleaning machine

與（yǔ）用清洗機不同，   一般這種清洗（xǐ）的費用較（jiào）高。要拆（chāi）下噴油嘴。其優（yōu）點在於，可以用超（chāo）聲波對噴油嘴有無霧化、響應水平（píng）、開關靈敏度、否漏油等進行檢測。但其同樣也存在缺點，由於在清洗過程中噴油嘴的電磁閥不動，閥芯的針孔不容易被清洗到目前新款的超聲波清洗機，也可以給閥芯（xīn）加上交（jiāo）流電，讓其打開並通過眼芯（xīn）往複運（yùn）動（dòng），對閥芯的清洗效果比（bǐ）擬好（hǎo）。

Different from cleaning machine, this kind of cleaning cost is higher. To remove the fuel injection nozzle. The advantage of this method is that ultrasonic can be used to detect whether the nozzle has atomization, response level, switch sensitivity and whether there is oil leakage. However, it also has disadvantages. Because the solenoid valve of the nozzle does not move during the cleaning process, the pinhole of the valve core is not easy to be cleaned. The new ultrasonic cleaning machine can also add alternating current to the valve core to make it open and move back and forth through the eye core, which has a better cleaning effect on the valve core.