Why Do Water Droplets Not Fall Off After Car Waxing?

Why does the Wrangler not blow hot air after switching to heating mode?

Wrangler not blowing hot air after switching to heating mode may be caused by the following reasons: Thermostat stuck open or opening too early: This causes the cooling system to enter major circulation prematurely. When the external temperature is very low, especially while driving, the cold air quickly cools the antifreeze, preventing the engine water temperature from rising and resulting in no hot air from the heating system. Water pump impeller damage or slippage: This leads to insufficient flow through the heater core, preventing heat transfer. Air lock in engine cooling system: Air locks cause poor circulation in the cooling system, resulting in high water temperature but no heat from the heater. If there's constant air in the cooling system, it's likely due to a damaged cylinder head gasket allowing combustion gases into the cooling system. If the inlet pipe of the heater core is hot while the outlet pipe remains cool, this indicates a clogged heater core that needs replacement.

19

0

Share

What does 10% over the speed limit on highways mean?

Highway speeding by 10% means 132km/h. Below are three scenarios of highway speed limits: 1. Signage speed limits: These are determined by the speed limits indicated on road signs and markings. This speed classification is not uniformly regulated, and speed limits may vary between different regions or even different sections of the same highway. 2. Statutory speed limits: According to the "Road Traffic Safety Law" and its implementing regulations, on roads without a central dividing line, the speed limit is 40 kilometers per hour; on roads with only one motor vehicle lane in the same direction, the speed limit is 70 kilometers per hour; when entering or exiting non-motorized lanes, passing through railway crossings, sharp curves, narrow roads, narrow bridges, or when making U-turns, turning, or descending steep slopes, the speed limit is 30 kilometers per hour. The maximum speed limit on highways is 120 kilometers per hour. 3. Speed limits during special periods and adverse weather conditions: Passenger vehicles traveling at night (from 10 PM to 5 AM the next day) must not exceed 80% of the daytime speed limit. Additionally, according to the "Road Traffic Safety Law" and its implementing regulations, when driving on ordinary roads in fog, rain, snow, dust, or hail with visibility less than 50 meters, or when driving on icy, snowy, or muddy roads, the speed limit is 30 kilometers per hour.

16

4

Share

Does revving the engine in neutral gear harm the car?

Revving the engine in neutral gear can indeed harm the car. When in neutral, the engine lacks resistance, which can cause the RPM to rise excessively. High RPMs primarily increase fuel consumption. Additionally, excessively high RPMs can lead to abnormal engine wear and place excessive load on the transmission gears, potentially causing gear damage in severe cases. Prolonged revving can also raise the engine temperature, and without cool air intake, the radiator's cooling efficiency significantly decreases. Even though the gear is in neutral, the transmission's input shaft continues to rotate, causing all components except the output shaft and synchronizers to move. This uneven movement can result in uneven wear and stress on various parts.

7

2

Share

How to align the timing belt on a Ford Kuga?

Ford Kuga's method for aligning the timing belt is: Special tools are required to lock the camshaft, and then the crankshaft needs to be fixed with dedicated tools. The timing marks on the flywheel are used to ensure the engine's mechanical timing, and they must also be aligned with the timing marks on the camshaft drive wheel to effectively guarantee the engine's timing. The Ford Kuga is an SUV under the Ford brand, with body dimensions of 4524mm in length, 1838mm in width, and 1701mm in height, and a wheelbase of 2690mm. The vehicle features a more sporty and fashionable exterior design, with a newly added 10-inch LCD screen on the center console, paired with a new internet-connected car intelligent system, further enhancing ride comfort.

13

2

Share

Can the car still run without engine oil?

No. Engine oil plays a crucial role in lubricating and cooling the engine. If you continue to drive without engine oil, the lack of lubrication will cause the engine components to rub against each other and sustain damage. Additionally, without the cooling effect, the engine may experience phenomena like burning the crankshaft or bearing shells during high-speed operation. Driving without engine oil leads to poor lubrication and, in severe cases, can cause engine seizure due to the absence of lubrication. The less oil there is, the more severe the consequences. When the engine is restarted, dry or semi-dry friction may occur between the cylinder and piston, accelerating component wear and significantly increasing starting resistance, making it difficult to start. Engine oil primarily serves the following functions: 1. Lubrication: The main role of engine oil is to provide proper lubrication for the engine's pistons, bearings, and other components. 2. Sealing: During the "power" stroke, it prevents high-temperature, high-pressure gases in the combustion chamber from leaking into the crankcase through the gap between the piston and cylinder. 3. Heat dissipation: When the engine operates at high speeds, friction between high-speed components generates significant heat. This heat is absorbed by the oil flowing through the gaps between components and carried to the oil pan or oil cooler, where it is dissipated into the air. 4. Rust prevention: Engine oil protects metal components from corrosion. 5. Cleaning: It filters out impurities and metal wear particles generated during engine operation through the oil filter, keeping the lubrication system clean.

3

2

Share

Is driving a motor vehicle in slippers punishable by demerit points?

Driving a motor vehicle in slippers is punishable by demerit points. Wearing slippers, making phone calls, or driving without fastening the seatbelt—all behaviors that hinder safe driving—are considered illegal and subject to corresponding administrative penalties. If these violations are captured by traffic surveillance cameras or detected during on-site inspections by traffic police, they will be deemed illegal acts, resulting in fines and a deduction of 2 points. Driving in slippers is highly unsafe. In situations requiring emergency braking, it can easily lead to foot slippage or even failure to reach the brake pedal, posing significant hazards to safe driving.

3

2

Share

Why Do Water Droplets Not Fall Off After Car Waxing?

Why does the Wrangler not blow hot air after switching to heating mode?

What does 10% over the speed limit on highways mean?

Does revving the engine in neutral gear harm the car?

How to align the timing belt on a Ford Kuga?

Can the car still run without engine oil?

Is driving a motor vehicle in slippers punishable by demerit points?

Does a new vehicle need to undergo inspection in the sixth year?

Why does the motorcycle emit blue smoke after changing the engine oil?

How many liters of engine oil should be added to the Buick LaCrosse 2.0t?

Are new motorcycles more fuel-consuming?