You will not see water coming out of your car's exhaust when it is under normal conditions. However, if your exhaust is leaking or dripping water, that means your car exhaust contains water. You don't need to worry, usually the cause is not a big problem. However, it's best to have this situation investigated and handled by a professional mechanic if you're not sure you can handle it. Because if not, It could make things worse and cost you hundreds of rupiah.
In some cases this is not a big deal. The worst case is usually when you have to replace one or two small components which can cost hundreds of thousands of rupiah. Following are several causes of water coming out of the exhaust, quoted by Otodiva.com from oards.com.
1. Condensation (Normal Causes)
After your engine carries out the internal combustion process, a mixture of carbon dioxide and water is formed as a result. After the engine has been given time to cool, there is residual gas coming out of the chamber and out of the exhaust. Condensation of these gases causes water to escape from your exhaust.
2. Catalytic Converter (Normal Causes)
When the exhaust releases toxic carbon gas, Meanwhile the catalytic converter is tasked with reducing the volume of this gas before it comes out of the exhaust.
This allows vehicles to be more environmentally friendly while reducing the risk of harming other people in the process.
However, because the catalytic converter works to reduce these toxic emissions, there is a small amount of water vapor formed as a result. This water vapor will form small droplets that will come out of the exhaust.
3. Engine Heat (Normal Causes)
If you live in an environment near mountains or with cold temperatures, You must have seen water coming out of your exhaust. Engine components usually need a little time to allow oil to circulate through them to cool them.
Meanwhile, Moving engine components will generate a lot of heat in the first few minutes after starting. The exhaust will also get incredibly hot too.
Because of that, Water vapor is produced when heat combines with cold air. Then you will see small water droplets falling from the exhaust along with a small amount of white smoke. Wait a few minutes with the engine running after that everything will disappear and be normal.
4. Damaged Piston (Abnormal Causes)
This can be a serious problem when a bad piston causes water to come out of your exhaust. You will find out whether the piston or rings are causing smoke to come out of the exhaust besides water.
If it's really serious, then the smell of burning will fill the cabin interior. Either a burning smell or perhaps a sweet aroma will indicate a bigger problem.
So, if you experience a strange smell accompanied by smoke and water coming out of your exhaust, then do not drive your vehicle. Have it towed to an auto repair shop and have a technician confirm that it is your piston or piston rings that are the cause, replace immediately if necessary.
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