The engine of the SY980 equipment emits black smoke, and the exhaust is heavy.

Release time:

2025-11-27

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Fault analysis, troubleshooting process, and fault summary

II. Troubleshooting Method

1. The air filter is clogged, resulting in insufficient intake air;

Air filter blockage, insufficient intake;

2. Insufficient engine power;

Insufficient engine power;

3. The valve seals are not tight, causing some combustion gases to flow back into the intake system;

The valve seal is not tight, resulting in some combustion gas backflow to the intake system;

4. Engine turbocharger failure;

Engine turbocharger failure;

5. The oil quality is poor and contains impurities, resulting in incomplete combustion.

Poor oil with impurities, incomplete combustion;

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III. Troubleshooting Process

1. Upon arriving at the site and starting up the equipment, we observed the fault phenomenon and found that the engine was emitting black smoke and had significant exhaust leakage.

Upon arrival at the site, after starting the equipment, observe the fault phenomenon and find that the engine emits black smoke and exhaust gas is large;

2. Check whether the air filter is clogged; it is normal.

Check whether the air filter is blocked, normal;

3. Check whether the engine output power is normal; it is normal.

Check whether the engine output power is normal, normal;

4. Check whether the fuel filter is clogged; it is normal.

Check whether the fuel filter is blocked; it should be normal.

5. Check whether the fuel contains impurities—normal.

Check whether there are impurities in the fuel; normal.

6. Check whether the turbocharger is functioning properly; inspect for damage to the turbocharger blades.

Check whether the turbocharger is functioning normally; look for abnormal damage to the turbocharger blades.

7. The turbocharger has been replaced, and the equipment has returned to normal operation;

The turbocharger equipment has been replaced, and normal operation has been restored.

Four: Fault Summary – Conclusion

1. When the temperature is low, after starting the engine, allow it to idle for a while.

When the temperature is low, start the engine and let it idle for a period of time;

2. The operator should regularly inspect and replace the air filter to prevent dust and impurities from entering.

The operator should check and replace the air filter regularly to prevent dust and impurities from entering;

3. Choose high-quality fuel to avoid damaging the turbocharger by using low-quality fuel.

Choose high-quality fuel to avoid using inferior fuel that could damage the turbocharger.

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The SY500 vehicle lacks power

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SY980H rotary mechanism is not moving.