If your car’s exhaust drips water out of the tailpipe, there’s no reason to necessarily panic. Your car’s exhaust does exactly what it sounds like it does, expels things. Gases, vapors, and all the other byproducts created by your car’s normal operation have to exit the vehicles inner workings eventually, and they do that through the exhaust.
It can be worrisome when you see water dripping from your car's tail pipe. If you see this and wonder if this condition is normal, you can be assured that it is. Plenty of people have witnessed this water coming from their own exhaust pipes and no major problems have resulted.
There are a number of harmless reasons why you could be noticing this in addition to some more serious causes. Here's what you need to know about what signs mean it is time to start stressing.
Engine Combustion Water Condensation
As combustion takes place in your car’s engine, a mixture of water and carbon dioxide is created. When the engine has cooled and any exhaust gasses exit the combustion chamber, that condensation of water and carbon dioxide becomes much more noticeable, and in a moment like that one, you're more likely to see water dripping from your car's exhaust pipe.
Catalytic Converter Byproduct
The purpose of your car’s catalytic converter is to convert otherwise harmful emissions into things that are less harmful before they exit the exhaust. One of the many byproducts that this vehicle component produces is a small amount of water vapor.
Hot Engine Condensation
You may notice water in your tailpipe when the car's engine first heats up. This happens because while your engine heats up, the exhaust system produces heat as well, which presents as vapor in your tail pipe.
WARNING: When water is running from your exhaust after your car has been running for a period of time, you should be concerned.
Smoke and Water Emissions
You should pay close attention to your exhaust if it is emitting both smoke and water, or if it is emitting burning oil odor. These are signs of bad rings or of a cracked piston in your car.
If liquid coming from your tailpipe has a sweet smell, like maple syrup, this could be a sign of a more serious engine problem.
Water leaking from the exhaust pipe is usually nothing unless it’s coupled with other stranger malfunctions, and the brief circumstances under which you see water dripping from the exhaust are likely negligible.