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Wondering why there is water dripping from exhaust under car? The presence of water vapour in your vehicle exhaust system is the reason behind this. This water vapour is produced as a consequence of the burning of fuel. First, it is crucial to examine why water leaks from the car exhaust pipes thoroughly. Then, a check-up would cause no further harm and repair any potential severe damage.
Your car exhaust system operates by removing waste products that are produced while it is working. The exhaust releases the byproducts, and you might see a small amount of water leaking. A small amount of water dripping from the car’s exhaust isn’t a big concern. However, sometimes it could turn out to be a severe problem. Read on the blog to know whether you need to have your car looked out by a professional or not.
Causes of dripping water from the exhaust
There are several causes of dripping water from exhaust, few of them are as follows:
1. Water Condensation in Engines
This is the most common yet not to be worried about the reason behind water coming from your exhaust pipe. Water and carbon dioxide form a mixture as soon as you turn on your vehicle. After you park your car and the engine starts to cool down, the water vapour cools down to the water, dripping from the car’s exhaust pipe. This is quite normal and not a severe problem to be worried about.
2. Heated Engine
Your car will be required to heat up to function correctly in a more fantastic location. As a result, your vehicle accumulates extra heat, which is then released through the car's exhaust pipes. As a result, you will notice water droplets flowing out of your exhaust pipes since the heat will cause condensation. Although it could be risky, the best way to avoid this problem from becoming too serious is to allow the engine to run for a while before you get behind the wheel.
Also Read: How to Handle an Overheated Car Engine?
3. A problem with Catalytic Converter
A catalytic converter is responsible for transforming unwanted byproducts of the car into environmentally friendly substances. It converts the vehicle's hazardous chemicals into harmless byproducts like water or gas. The optimal performance of a catalytic converter is demonstrated by water leaking from the exhaust, so you shouldn't be concerned about this.
4. Head Gasket Defect
When you should be most concerned after seeing water leaking from your exhaust pipe is when a blown head gasket Engine overheating may cause head gasket leakage. They expand and distort as the engine gets warm, causing them to separate from their respective seals and gaskets. This causes white smoke to come out from the middle of the exhaust pipe. The sooner this problem is resolved, the better.
5. Faulty rings or pistons
Water coming from the exhaust pipe due to damaged rings or pistons is only possible if there is a blown head gasket or there is still dampness in the exhaust pipe. However, faulty pistons or rings will cause too much blowby, which might result in greasy residue across the exhaust pipe, blue smoke, or dark exhaust. Therefore, like blown head gaskets, it is not advised to let this problem stay in for a long time without a repair.
Also Read: Car Smoke's: Types and what it is trying to tell you?
If water drips from the exhaust, is this normal?
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We hope that now that you know which cause for water dripping from the exhaust pipe is dangerous and which is not. Water leaking from the exhaust system occasionally may be brought on by natural sources. Some typical causes are engine heat, catalytic converter operation, and water condensation. If the underlying causes are due to these reasons, then there is no need to worry about it. However, if water is still flowing again from the tailpipe after ruling out the usual causes, it is best to have the car inspected by a mechanic.
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FAQ’s
1. How long does condensation on exhaust pipes last?
On average most cars should be able to get rid of any condensation in the exhaust system after 20 minutes of continuous running.
2. Is the problem of pistons can cause a problem with dripping water from the exhaust?
Yes, damage to faulty pistons and a blown head gasket can cause a problem with dripping water from the exhaust pipes.
3. What is the cause of a heated engine?
The heated engine can be due to various reasons, such as issues with radiators, broken water pumps, leakage in the cooling system, friction between roads and brakes, etc.
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It signifies that the car is running absolutely correct. Here is the reason why:
A gasoline (petrol) molecule is made up as such:
C8H18 (or 8 Carbon atoms and 18 Hydrogen atoms)
Energy is obtained from the combustion of it by the conversion of a hydrocarbon to carbon dioxide and water. The combustion of octane follows this reaction:
2 C8H18 + 25 O2 → 16 CO2 + 18 H2O
Or better said, you have two of the hydrocarbon molecules along with 25 oxygen molecules, they swirl together into a mix, the spark plug ignites them, boom, and out the tail pipe comes 16 carbon dioxide molecules and 18 water molecules ... at least in a perfect world. Some cars don't put out exactly that ratio. There may be a little bit of carbon monoxide (CO), unburnt hydrocarbons (C8H18), and/or nitrogen oxide (NO2) coming out of the engine exhaust port along with the CO2 and H2O. In this case, the catalytic convertor's job is to help clean these up so you can get closer to the perfect ratio described above.
As described, the water coming out of the tail pipe is a natural occurrence of the combustion process. You will usually see it coming out of the tail pipe when the engine and exhaust system of the vehicle is not completely warmed up. When it does become completely warmed up, you won't see it any more, because it comes out as steam (well, you'll see it in the winter time if it's cold enough, but you get the idea).
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