What Causes Heavy White Smoke When Accelerating Hard in an Automatic Transmission Car?
2 Answers
Here are the reasons why heavy white smoke appears when accelerating hard in an automatic transmission car: 1. Insufficient temperature: Due to the engine temperature being too low, part of the fuel-air mixture injected into the cylinder cannot burn, resulting in white smoke from the exhaust pipe. Therefore, after starting the engine, pay attention to the radiator's insulation and operate at medium throttle to allow the engine temperature to reach above 50 degrees before gradually increasing the load. 2. Water in diesel: Water in diesel directly affects the normal combustion of the mixture, causing white smoke. In this case, release the sedimented oil and drain the accumulated water, replacing the diesel if necessary. 3. Damaged cylinder head: If the exhaust pipe continues to emit white smoke, it may be due to water entering from a damaged cylinder head or cylinder gasket in individual cylinders. Remove and inspect them, replacing the damaged cylinder head or gasket. Additionally, if the intake valve does not close tightly, white smoke may also appear, which should be checked and repaired.
I've encountered a similar situation before while driving. After stomping on the accelerator, a large amount of white smoke appeared, which was really scary. That time, I found out it was coolant leaking into the engine combustion chamber. Especially when you floor the accelerator, the pressure increases, and the water vapor sprays out, turning into white smoke. It could be due to aging cylinder gaskets or issues with the radiator seal. I suggest you stop the car immediately to check if the temperature gauge is normal. Don't keep revving the engine hard, as it can easily damage it. During regular maintenance, remember to pay more attention to the cooling system. Regularly changing the antifreeze can prevent most problems. This is no small matter; delaying it could lead to cylinder deformation or more faults. Experience tells me it's best to find a nearby repair shop for a professional inspection right away to avoid breaking down on the road.
