just run engine until it stops smoking out of tail pipe. If it stops emitting white smoke and you move the car it may start smoking again because there is a possibility that some water in exhaust has been moved onto hot areas so just allow it to run more. Ensure no more water is leaking into exhaust.
No, it is not. BUT: Starting a car with the exhaust submerged carries other risks. By implication there are other things submerged that could be damaged by water, such as the alternator, HVAC, or transmission. Also, the engine may not start if the starter cannot overcome the water pressure.
No, it will just make the car loud.
If the vehicle has a stainless steel exhaust system it will last the life of the car. If it does not and you drive in roads treated with salt it will not last as long. Surface rust does not mean the exhaust in need of repair. Surface rust is normal on a steel exhaust system.
squeeking from exhaust manifold is caused by a leak allowing exhaust gas to leak. it will only get worse as time goes on unless it is fixed
The front O2 sensor is located at the bottom of the heat shield just before you get to the exhaust. It has a wire connected to it. Hard to miss. You will have access to this from the top of the car.
if it runs on pure hydrogen then the only exhaust will be pure water vapor.
Do you have an exhaust leak? Do you happen to have have an exhaust leak or a damaged water pump bearing?
Carbon Dioxide and Water.
Nothing
It is a chemical change.
Please describe your problem more? When is there water in the exhaust? When the car is cold, hot, just started, after running for some time?
no it will not, I'm sorry to say. try to hide the exhaust with some mud, it should do the trick.
You need a new Head Gasket.
The normal combustion product of gas and oxygen is water (in the form of vapor because it is hot) and carbon dioxide. When you shut off a running car, water vapor in the air condenses to water as the muffler cools down. When you start the car, the exhaust gasses push the now liquid water out the back.
No, it is not. BUT: Starting a car with the exhaust submerged carries other risks. By implication there are other things submerged that could be damaged by water, such as the alternator, HVAC, or transmission. Also, the engine may not start if the starter cannot overcome the water pressure.
there is always exhaust (expect when the engine's off or hybird) unless you are too close to the car in front of you.
Clean the mouse nest out of the air cleaner.