What Causes Water Leakage from a Car's Exhaust Pipe?

2 Answers
MacEli
09/02/25 2:44am
The reason for water leakage from a car's exhaust pipe is: the car engine is working normally, with complete combustion and good atomization effect, which is a normal phenomenon. The exhaust pipe includes the front exhaust pipe and the rear exhaust pipe, and its functions are: 1. Vibration damping and noise reduction; 2. Facilitating installation; 3. Extending the life of the exhaust muffler system. The maintenance methods for the exhaust pipe are: 1. Waterproofing: When driving in the rain or going to the car wash, be careful to prevent water from entering the muffler, which can cause rust and affect the use of the exhaust pipe; 2. Rust prevention: Remove the muffler, plug the drainage hole, add rust-proof oil evenly into the cylinder, and then reinstall the muffler; 3. Cleaning: The exhaust pipe is often exposed outside the car, similar to the interior of the car, and internal dirt can affect normal use, so attention should be paid to the cleanliness of the exhaust pipe.
Was this review help?
20
4
Share
VonValentina
09/14/25 5:02am
Just ran into my neighbor Old Zhang asking about this the other day. He thought the car leaking water was a malfunction. Actually, it's quite common for the exhaust pipe to drip water in winter, mainly because the moisture from gasoline combustion is expelled through the tailpipe. Gasoline contains hydrogen, and when it burns, it produces water vapor, which turns into water droplets when it hits the cold inner walls of the exhaust pipe. There's usually a dedicated drainage hole in the muffler to prevent water accumulation from corroding the pipes. However, if the dripping is excessive, pay attention to three areas: if the rear section of the exhaust is rusted through, water may seep out; a damaged engine cylinder gasket can allow coolant to flow into the exhaust pipe; or if the internal ceramic of the catalytic converter cracks, it can also trap water. If you kick the muffler and hear a splashing sound, it's likely severely waterlogged and needs part replacement.
Was this review help?
8
2
Share
Expand All
More Forum Discussions

What are the symptoms of a broken automatic transmission in a car?

Automatic transmission failure symptoms include slow response, inability to upshift, and engine stalling when shifting gears. Here are detailed explanations of these phenomena: Slow response: When the transmission cannot quickly shift to the correct gear, shifting feels rough, or there's difficulty engaging gears (or failure to engage), this indicates transmission problems; Inability to upshift: While driving, the transmission remains stuck in 1st gear and cannot shift to 2nd or higher gears. Alternatively, it may shift to 2nd gear but fails to engage 3rd or overdrive gears; Engine stalling when shifting: After starting the car, when shifting the gear lever from P or N to other positions (like P or R), the engine stalls. Similarly, the engine may stall when braking to a stop while driving.
3
3
Share

Can Others Use My Personal Charging Pile?

If the installed charging pile is for personal use, you can manage it yourself. It requires a dedicated card and password for operation, preventing unauthorized usage by others. Functions of Charging Piles: Charging piles function similarly to fuel dispensers in gas stations. They can be fixed to the ground or walls and installed in public buildings, residential community parking lots, or charging stations. They are capable of charging various models of electric vehicles at different voltage levels. Types of Charging Piles: Charging piles can be categorized into DC charging piles, AC charging piles, and AC/DC integrated charging piles. Generally, charging piles offer two charging modes: standard charging and fast charging.
3
1
Share

Can an automatic transmission car shift gears without starting the engine?

An automatic transmission car cannot shift gears without starting the engine, unless it is shifting into P gear when not already in P gear; when in P gear, it will be locked, and generally, the car cannot be started unless it is in P gear. Shifting techniques: When starting an automatic transmission engine, the gear selector must be placed in P or N gear, and the handbrake must be engaged or the brake pedal must be depressed. When starting the car, first depress the brake pedal, shift into gear, release the handbrake, then smoothly lift the brake pedal, and gradually press the accelerator pedal after the car starts moving slowly. Precautions for shifting: Do not press the accelerator pedal after starting the engine and before moving the car; do not release the brake pedal when shifting gears; after starting, do not press the accelerator pedal too quickly or too hard—press it slowly.
8
2
Share

What brand is yonking tire?

yonking tire is a domestic brand called Yongjin Tire, a product of Shandong Yongjin Rubber Co., Ltd. Below is relevant information about Yongjin Tire: Yongjin Tire: Yongjin Tire is a product of Shandong Yongjin Rubber Co., Ltd., which was established in 2013. The company primarily engages in the production and sales of radial tires, rubber products, and bead wire sales. Advantages and disadvantages of Yongjin Tire: Yongjin Tire performs well in noise reduction, offers average comfort, and excels in fuel efficiency and wear resistance. However, its handling is relatively poor. It is mainly used in domestic brand sedans and is a cost-effective automotive tire.
14
5
Share

What is the speed limit on Rongwei Expressway in 2021?

The maximum speed shall not exceed 120 kilometers per hour, and the minimum speed shall not be less than 60 kilometers per hour. Expressway speed limit values: The speed limit on expressways shall not exceed 120km/h, and the limit value should be an integer multiple of 10km/h. The difference between speed limits of two adjacent sections should not exceed 20km/h. For highway interchanges, the speed limit difference between mainlines, deceleration lanes, and exit ramps should not exceed 30km/h. Speed limit sign design: Speed limit signs should be designed to be more concise, clear, and aesthetically pleasing. They should be installed at the starting point of speed-limited sections and must not be obscured by roadside trees, structures, or other traffic signs. Additional signs should be placed as needed.
7
3
Share

Why Does an Automatic Car Make Noise When Releasing the Brake to Start?

This is a normal phenomenon for automatic transmission cars. The slower and lighter you release the brake, the more noticeable this sound becomes. Below are the specific reasons for this phenomenon: Pressing the brake pedal when parking: As long as the gear lever of an automatic transmission car is not in the parking gear or neutral gear, the engine will have power output, and there will also be power output at idle speed. If you want to park, you must press the brake pedal. Friction between the brake pads and brake disc: When starting, the power output from the engine has already been applied to the wheels. It's just that the braking force is greater than the power, so the wheels do not move. When the braking force is less than the power, the wheels will move. When the driver releases the brake pedal, and the power and braking force are at a critical point, the friction between the brake pads and the brake disc will produce noise.
6
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.