What Are the Consequences of Not Tightening the Fuel Tank Cap?

2 Answers
Geoffrey
07/25/25 11:59am
Introduction to the consequences of not tightening the fuel tank cap: If the fuel tank cap is not closed properly, gasoline will evaporate from the tank cap outlet, leading to rapid fuel consumption. In case of rain, water may enter the fuel tank. In hot weather, the evaporation of gasoline can easily ignite or pose a fire hazard. Below is some related information about the fuel tank cap: 1. The fuel tank cap refers to the container on a car used for storing gasoline: It is square-shaped, made of stainless steel, and has excellent sealing properties. It only has a small circular opening, about the size of a bottle cap, which facilitates storage. 2. The fuel tank cap is generally located at the rear of the car: In modern cars, the trunk and fuel tank cap can usually be operated remotely from inside the cabin.
Was this review help?
19
1
Share
SanCorey
08/11/25 8:10pm
I once made the mistake of not tightening the fuel tank cap properly while driving. The most immediate consequence was fuel evaporation, especially during hot summer days, where several liters could disappear from a full tank—essentially throwing money away. Even more troublesome was the persistent gasoline smell wafting from the trunk into the cabin, leaving me dizzy and nauseous. On one occasion, after driving continuously for three hours, I vomited as soon as I stepped out of the car. Additionally, rainwater and dust can easily enter the tank, and impurities in the fuel can affect engine performance. Last time, because of this, I had to replace the entire fuel filter, costing me nearly 500 yuan. Now, every time I refuel, I make sure to twist the cap a couple extra turns until I hear a clear click to confirm it's properly sealed. As a side note, long-term neglect of tightening the cap could also deform the tank's threads, leading to even costlier replacements down the line.
Was this review help?
4
5
Share
Expand All
More Forum Discussions

How to Remove Fog from a Golf?

The Golf can use the following methods to remove fog, with specific steps as follows: 1. Adjust the air conditioning to blow on the front windshield. Turn on the hot air and also activate the AC. Once the water temperature rises, the fog will dissipate; 2. Spray anti-fog agent prevention method: Spray a small amount of anti-fog agent on the car window (inner side), then wipe it clean to remove dirt and stains from the window. While polishing the glass, a thin transparent protective film is formed on the glass; 3. Use the air conditioning's cooling and dehumidifying function to reduce air humidity and remove fog: In summer, especially when multiple people enter the car, if the air conditioning is not turned on in time, the humidity from exhaled breath is high, and the front windshield will quickly fog up; 4. Use the method of reducing temperature difference to remove fog: In winter, use the heater to blow hot air onto the glass, quickly raising the temperature of the front glass and reducing the temperature difference between the inner and outer surfaces of the window glass, which can promptly prevent excessive fogging on the front windshield.
11
5
Share

Changan CS75 Maintenance Light Reset

Changan CS75 maintenance light reset steps are as follows: 1. Turn the ignition switch to the "ON" position to power up the entire vehicle; 2. Press the "Select" button on the left side of the steering wheel; 3. Then press and hold the "Reset" button for about 5 seconds; 4. While keeping the "Reset" button pressed, turn off the vehicle power, then turn it back on again to reset the maintenance light.
9
3
Share

How to Remove and Install a Skoda Ignition Lock?

Skoda ignition lock removal and installation steps are as follows: 1. Turn the key to the ON position and align the small hole on the lock cylinder; 2. Use a straight and rigid small wire, gently wiggle it in to remove the lock. Introduction to the ignition lock is as follows: 1. The ignition lock, also known as the ignition switch, is a multi-position switch that requires a corresponding key to operate; 2. The ignition lock is typically used to control the ignition circuit, instrument circuit, electronic control system (engine), starting circuit, and auxiliary electrical circuits (excluding the anti-theft system, most car horn circuits, warning lights, hazard warning lights, and some vehicle small lights).
12
2
Share

Are Car Key Batteries All the Same?

Car key batteries are generally different. Here is some relevant information: 1. Car key batteries are not universal; they usually have model numbers printed on them. Common battery models include 2032, 2025, 2016, 1632, 1620, and 1616. 2. You can replace the battery at any place that offers battery replacement services. Most car key batteries are button cells, which typically have a long lifespan. 3. Normally, the battery can last for more than three years. If you include the spare key, most car owners may not even use up the battery before changing their cars.
20
4
Share

How is the engine of the Hanteng X5?

Hanteng X5 is equipped with two types of engines, one is a 1.5-liter turbocharged engine, and the other is a 1.5-liter naturally aspirated engine. Below is an introduction to these two engines and the Hanteng X5: 1. The 1.5-liter naturally aspirated engine delivers 112 horsepower and a maximum torque of 150 Nm; 2. The 1.5-liter turbocharged engine produces 156 horsepower and a maximum torque of 215 Nm; 3. The Hanteng X5 is a model under Hanteng Auto, with body dimensions of 4501mm in length, 1820mm in width, and 1648mm in height, and a wheelbase of 2600mm; 4. In terms of interior, the Hanteng X5 features a dual-tone interior design with wood grain trim panels, creating a warm atmosphere; 5. The center console is equipped with a 9-inch touchscreen, including the Hanteng Cloud Intelligent Connectivity Service System, which provides functions such as remote diagnosis, remote control, and navigation; 6. Additionally, the Hanteng X5 comes with features like one-button start-stop, EPB electronic parking brake, automatic parking, panoramic sunroof, ABS with EBD, and ESP.
15
5
Share

How Many Liters of Engine Oil Should Be Added to the S60L?

The Volvo S60L requires 3.6 liters of engine oil, and it should not be overfilled. Below are the steps for changing the engine oil: 1. Run the engine until it reaches operating temperature. Then, use a jack to lift the vehicle, engage the handbrake, and secure the front wheels with wooden wedges. 2. Place an old oil container under the oil pan, locate the oil drain plug, and slowly loosen it. Be careful to avoid contact with the hot oil. Allow the oil to drain for a while. Inspect the drain plug, then reinstall it, ensuring not to overtighten to prevent damage to the oil pan. 3. Move the oil container under the oil filter. Use an oil filter wrench to loosen the filter, then unscrew it by hand. If the filter is still hot, remember to wear gloves. Even if the filter was previously tightened securely, there’s no need to worry about damaging it during removal, as long as the filter’s mounting threads and surrounding components remain intact. 4. Refer to the user manual to select the appropriate oil filter. 5. Apply a thin layer of new oil to the gasket of the new filter. If the filter is installed vertically, you can pour some new oil into it to reduce dry startup wear during the next engine start. Hand-tighten the filter, then tighten it further as specified (usually an additional 3/4 turn after hand-tightening). 6. Pour the new oil into the oil pan, following the instructions in the user manual. Use a funnel to avoid spilling oil on the engine exterior. Check for leaks underneath the engine. If there are no leaks, lower the vehicle, check the oil dipstick, and start the engine. The dashboard warning light should turn off immediately after startup. 7. Turn off the engine and recheck the oil level. Dispose of the used oil and filter according to local regulations.
16
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.