1. Rich Fuel Mixture: If the fuel mixture in your engine is too rich, meaning it contains an excessive amount of gasoline compared to air, incomplete combustion can occur. This results in unburned fuel exiting the engine and producing white smoke with a strong gasoline smell.
2. Faulty Fuel Injectors: Malfunctioning fuel injectors can cause the engine to deliver too much fuel into the cylinders, resulting in incomplete combustion, white smoke, and a gasoline odor.
3. Faulty Oxygen Sensor: The oxygen sensor monitors the amount of unburned oxygen in the exhaust gas and relays this information to the engine's computer. A faulty oxygen sensor can provide incorrect readings, leading to an excessively rich fuel mixture and the symptoms you're experiencing.
4. Engine Coolant Leakage: If engine coolant is leaking into the combustion chambers, it can produce white smoke and a sweet odor. However, this is usually accompanied by other symptoms like low coolant levels and overheating.
5. Worn-Out Piston Rings: Worn or damaged piston rings can allow engine oil to enter the combustion chambers, causing white smoke and a strong gasoline odor. This issue is more likely if the white smoke is accompanied by excessive oil consumption.
To accurately identify the cause of the white smoke and gasoline odor, it's recommended to have your Dodge Caravan diagnosed by a qualified mechanic. They can perform tests and inspections to pinpoint the root of the problem and recommend appropriate repairs.
