How do you know there is a missing cylinder?
Cylinder shortage is a common fault in automobile engines, which means that one or more cylinders of the engine cannot work properly. A missing cylinder will not only affect the vehicle's power performance, but may also cause further damage to the engine. So, how to judge whether the vehicle is missing a cylinder? This article will give you detailed answers based on the hot topics and hot content on the Internet in the past 10 days.
1. Common symptoms of tank shortage
A cylinder shortage usually has the following obvious symptoms, and car owners can make preliminary judgments based on these symptoms:
| symptom | Specific performance |
|---|---|
| Engine shaking | When the vehicle is idling or driving at low speed, the steering wheel or body vibrates obviously |
| power loss | Weak acceleration, feeling lack of power when climbing hills or overtaking |
| Increased fuel consumption | Engine efficiency decreases and fuel consumption increases significantly |
| Abnormal noise from exhaust pipe | The exhaust pipe makes a "chugging" sound and the exhaust is not smooth |
| The fault light comes on | A malfunction engine light (such as the MIL light) may come on |
2. How to further confirm the missing cylinder
If your vehicle has the above symptoms, you can further confirm whether it is missing a cylinder by the following methods:
| method | Operation steps |
|---|---|
| Pull out ignition coil test | Unplug the ignition coil or spark plug wires one by one and observe the changes in engine operation. |
| Use OBD diagnostic tool | Read the engine fault code to see if there are any codes related to missing cylinder (such as P0300-P0304) |
| Listen to the exhaust pipe sound | When the cylinder is missing, the sound of the exhaust pipe is uneven and may be accompanied by a "cannon" sound. |
| Check spark plug | Remove the spark plug and observe whether there is carbon deposits, ablation or oil stains |
3. Common reasons for lack of cylinders
Missing cylinders are usually caused by the following reasons:
| reason | illustrate |
|---|---|
| Spark plug failure | The spark plug is aging, carbon deposited or the electrode gap is too large |
| Ignition coil damaged | The ignition coil does not provide enough high voltage power |
| Fuel injection nozzle clogged | The fuel injector cannot inject fuel normally, causing the mixture to be too thin |
| Insufficient cylinder pressure | Worn piston rings, poor valve seals, or damaged cylinder gaskets |
| ECU failure | Engine control unit signal abnormality |
4. How to solve the problem of missing cylinders
Once the cylinder shortage is confirmed, corresponding measures can be taken according to the specific reasons:
| Solution | Operation suggestions |
|---|---|
| Replace spark plug | Choose the spark plug suitable for the model and replace it regularly |
| Replace ignition coil | Check ignition coil resistance and replace if necessary |
| Clean the fuel injector | Use special cleaning agent or disassemble and clean the fuel injection nozzle |
| Check cylinder pressure | Use the cylinder pressure gauge to measure and overhaul the engine if necessary |
| Check ECU | Reprogram or replace ECU |
5. Tips to prevent tank shortage
In order to reduce the occurrence of cylinder shortage, car owners can pay attention to the following points:
1.Regular maintenance:Replace spark plugs, ignition coils and other wearing parts according to the manufacturer's recommendations.
2.Use premium fuel:Avoid filling with low-quality gasoline to prevent the fuel injector from clogging.
3.Avoid prolonged idling:Idling for too long can easily lead to carbon deposits.
4.Check the fault light promptly:If you find that the engine check light is on, troubleshoot the problem as soon as possible.
Conclusion
Cylinder shortage is a common engine failure, but through careful observation and scientific testing, car owners can discover and solve the problem in time. If your vehicle shows symptoms of cylinder deficiency, it is recommended to repair it as soon as possible to avoid causing greater damage to the engine. Hope this article helps you!
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