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When you say "white smoke" what do you mean? Is it... you know, like... steam?

Understand that the products of engine combustion are carbon dioxide and water vapor. If the weather is cold enough and the exhaust is cooled by a cold exhaust system, you'll see water vapor out the tailpipe. Once the exhaust pipe warms up the water vapor will still be warm enough as it exits the exhaust pipe to not be visible even though it's still present.

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Q: My Nissan sentra 2.5L engine is smoking white smoke after i changed the catalytic converter what could be the problem?
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probably the catalytic converter- or you child is smoking in the car


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Can you drive 270 miles back home before you get your car fixed if the Catalytic Converter is smoking due to what you believe is a small oil leak?

If the vehicle is smoking out of the exhaust, its not necessarily the catalytic converter. If the engine has an oil leak big enough to cause oil to be burned, it typically needs a rebuild and should be rebuilt as soon as possible. (If its smoking, this isn't a small oil leak) This can be avoided with regular maintenance as these problems are common on poorly maintained vehicles. If the catalytic converter is plugged its highly advised the vehicle not be driven until it can be replaced, however if what you describe is excessive smoking, the vehicle should not be driven too long in its state as you risk destroying the engine entirely. If it is absolutely nessecary, take frequent breaks, and monitor your oil level. If oil is dripping onto the catalytic converter and is burning off causing smoking, you should be fine, just continue to monitor the oil level, and be wary of a fire that can start due to high temperatures and a flammable medium. If you chose to continue to drive the vehicle in that state, its at your own risk.


What does it mean when water is coming out of your catalytic converter?

Is it water ( condensation ) or is it antifreeze. If it is antifreeze it should be smoking WHITE out of the exhaust pipe and if it is then you have either a blown head gasket or a leaking Intake manifold gasket.


Why has society changed its view on smoking?

b. Because scientists found smoking causes cancer


If you quit smoking can you correct the problem?

We do not understand what problem you refer to.