What Causes Engine Shaking and Black Smoke in Kia Pegas?

1 Answers
DeTeagan
07/29/25 6:33pm
The causes of engine shaking and black smoke in Kia Pegas include faults in the engine emission system, ignition system issues, excessively high fuel pump supply pressure, or damage to a sensor in the engine electronic control system. Solutions for engine shaking and black smoke in Kia Pegas: Engine emission system fault: This is usually caused by a problem with the oxygen sensor in the emission system or excessive carbon buildup in the engine. It is recommended to perform a thorough carbon cleaning, inspect the oxygen sensor, and clean the three-way catalytic converter. Ignition system fault: This is typically caused by excessive gap in aged spark plugs. Replacing the spark plugs is advised. If the ignition coil fails to spark, leading to cylinder misfire, similar symptoms may occur, necessitating replacement of the ignition coil. Excessively high fuel pump supply pressure: This issue can cause the described symptoms. It is necessary to check the fuel pump supply pressure and clean the fuel injectors. Damage to a sensor in the engine electronic control system: If a sensor in the engine electronic control system is damaged, the issue can be diagnosed by reading the corresponding fault codes with a diagnostic tool. Focus should be placed on inspecting the intake pressure sensor and the mass air flow sensor.
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