Why can't the excavator start fire? Analysis and solutions of popular faults across the network
Recently, hot topics in the field of construction machinery have focused on equipment troubleshooting. In particular, the problem of "excavator failure to start" has become the focus of discussion among operators and maintenance technicians. This article combines the hot content of the entire network in the past 10 days to provide a structured analysis of common causes and countermeasures to help you solve the problem quickly.
1. Top 5 most popular fault causes in the entire network
| Ranking | Cause of failure | frequency of occurrence | Typical symptoms |
|---|---|---|---|
| 1 | Battery is low | 38% | Dashboard flickers/no response on startup |
| 2 | Fuel system failure | 25% | You can hear the starter motor sound but no fire |
| 3 | Starter motor damaged | 18% | There is an abnormal sound or no sound at all when igniting. |
| 4 | Throttle valve carbon deposits | 12% | Difficulty starting when cold |
| 5 | ECU system failure | 7% | The fault light is always on |
2. In-depth fault analysis
1. Battery Problem Troubleshooting Guide
•Voltage detection:Normal no-load voltage should be ≥12.6V (special attention should be paid to battery vulcanization in summer)
•Emergency plan:After starting up, it needs to continue running for more than 30 minutes to charge.
2. Triple inspection of fuel system
| Check items | Standard value | tool |
|---|---|---|
| fuel filter | 500 hours replacement | pressure gauge |
| Injector pressure | 180-220bar | Special tester |
| Oil path smoothness | No bubbles/impurities | Transparent hose |
3. Reference of popular repair cases
•Case 1:The "difficulty starting cold car" problem reported by users in Shandong was found to be diesel condensation wax (-10 diesel used in -15°C environment)
•Case 2:The "relay ablation" shown in Douyin's popular video causes the circuit to open (showing no response at startup)
3. Preventive maintenance suggestions
According to the latest data from the Construction Machinery Association:
| Maintenance items | cycle | Fee reference |
|---|---|---|
| Battery testing | weekly | 0 yuan (self-check) |
| Fuel system cleaning | 2000 hours | 300-500 yuan |
| ECU system diagnosis | half a year | 100-200 yuan |
4. Expert advice
1. Recommended installation for operations in cold areasFuel preheating device(Taobao hot-searched product price range: 280-650 yuan)
2. Long-term parking of equipment requiresDisconnect the negative terminal of the battery(Popular science content on short video platforms)
3. Pay attention to the latest technology trends:Intelligent diagnostic instrumentMaintenance has become a trend (JD sales increased by 120% in the past 7 days)
Conclusion:Through a systematic troubleshooting process, 80% of startup failures can be solved by themselves. If you still cannot start after trying the above methods, it is recommended to contact professional service personnel immediately to avoid damaging the core components of the engine. Collect the troubleshooting flow chart in this article to save a lot of repair time at critical moments!
check the details
check the details
en
