Each system of a concrete mixer is normal, but it can't be started. What's the reason? Next, I will teach you the essentials of diagnosis.

1、识别妨碍原因。对付混凝土搅拌车无法启动这类妨碍的诊断，应检测蓄电池。需要弄清楚，判断是不是蓄电池电量不足。

1. Identify the cause of the obstruction. To deal with the diagnosis of the concrete mixer unable to start, the battery should be tested first. We need to find out whether the battery is low.

2、检测启动系统。检测它的启动系统中的电路。从根本的构成形式来看，启动系统的电路一般来说包括：蓄电池、启动电机以及毗连这些部件的电缆等。除此之外，焚烧开关、启动机继电器或电磁线圈，尚有车载防盗系统等，也同样是启动系统的重要构成部分。

2. Check and start the system. Check the circuit in its starting system. From the fundamental form of composition, the starting system circuit generally includes: battery, starting motor and the cable adjacent to these components. In addition, incineration switch, starter relay or electromagnetic coil, as well as on-board anti-theft system are also important components of the starting system.
         

3、检测焚烧正时皮带呈现了打滑现象，是导致没有电火花发生，也是它无法启动的原因。

3. It is found that the burning timing belt is slipping, which is the reason why there is no spark and it can not be started.

4、检测电火花质量。可以取下焚烧线圈，然后用一个电火花检测器检测电火花是否正常。

4. Check the quality of electric spark. The incinerating coil can be removed and an electric spark detector can be used to detect whether the electric spark is normal.

5、检测燃油系统。它的燃油系统的诊断可以分为两部分：燃油供给系统的诊断和喷油器电路系统的诊断。燃油供给系统可以通过丈量燃油的流量和压力举办检测。丈量燃油流量的好的方式，是在燃油供给管路中带负载时检测管路。

5. Test the fuel system. The diagnosis of its fuel system can be divided into two parts: the diagnosis of fuel supply system and the diagnosis of fuel injector circuit system. The fuel supply system can be detected by measuring the fuel flow and pressure. A good way to measure the fuel flow is to detect the fuel supply pipeline with load.

6、检测防盗系统：它的防盗系统也会发生一些经常被忽略的燃油供给系统方面的妨碍。一些搅拌车制造商在防盗系统数据流中包罗了参数识别机能。在很多车型上，改换防盗系统的模块而没有对它举办正确的初始化处理惩罚。

6. Detection of anti-theft system: its anti-theft system will also have some often overlooked obstacles in the fuel supply system. Some mixer manufacturers include parameter identification function in data stream of anti-theft system. In many models, the anti-theft system module is replaced without proper initialization.

以上就是混凝土搅拌车无法启动的诊断要领，当然其它没说到的方面也会对它有影响，希望以上内容能够给大家一些参考。

The above is the concrete mixer can not start the diagnostic essentials, of course, other did not mention the aspects will also have an impact on it, I hope the above content can give you some reference.