Rapid diagnostic method that the engine cannot start

If you can't diagnose the cause of the engine's failure to start, you shouldn't try to open the Brilliance Engine Hood. The quick diagnosis of the engine's failure to start is the basis for car repair. Now let's take a look at how to use the appropriate diagnostic methods, follow the correct diagnostic steps, and diagnose the failure of the engine to start.

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1. Identify the cause of the failure. For the diagnosis that CHEVROLET Engine Suspension cannot initiate such a fault, the battery should first be tested. It must be clarified that the engine cannot be started or not.

2. Detect ignition timing. The slippage of the timing belt is the root cause of the failure of the spark and the engine failing to start.

3. Check the startup system. For the engine to fail to initiate such a fault, the first thing to do is to detect the circuit in the engine starting system. From the most basic form of composition, the circuit of the starting system generally includes the following basic parts, namely, the battery, the starting motor, and the cable connecting these components. Of course, in addition to this, ignition switches, starter relays or solenoids, as well as car alarm systems, are also an important part of the start-up system.

4. Detect the quality of the spark. When the circuit that starts the system passes the test and proves that there is no fault, focus on why the engine can't run. In general, the engine's ignition system is first detected, which is also the simplest one. In the early ignition system, you could easily remove the ignition coil and then use an electric spark detector to check if the spark is normal. When selecting an EDM detector, an adjustable detector is preferable to a fixed design because it allows you to adjust the detector to a smaller gap so you know that there is no spark at all. Is there still an electric spark but it is very weak?

5. Detect the fuel system. The diagnosis of the fuel system can be divided into two parts: the diagnosis of the fuel supply system and the diagnosis of the injector circuit. The fuel supply system can be detected by measuring the flow and pressure of the fuel. The best way to measure fuel flow is to inspect the line with load in the fuel supply line.

6, detection of the anti-theft system: car anti-theft system will also produce some of the fuel supply system failures that are often overlooked. Some car manufacturers include parameter identification in the anti-theft system data stream. On many models, replacing the module of the anti-theft system without properly initializing it will result in the car not starting up. There are also some cars that need to be replaced by a multi-function controller in certain situations, such as when the master key is lost.

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