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Tips for Cooling Air-Cooled Motorcycles?

1 Answers
GenevieveMarie
07/24/25 8:13pm
Based on the engine layout, installing a properly sized fan and adjusting its direction can, to some extent, assist in cooling. Following the path of the engine lubricating oil, adding an oil cooler can also help with auxiliary cooling. Air-cooled motorcycles can improve cooling efficiency by switching to high-quality lubricating oil, cleaning the cylinder head cooling fins, and reducing prolonged high-speed riding.
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What is the chassis code for the BMW 3 Series?

The chassis code for the BMW 3 Series is G20. The chassis codes for BMW 3 Series models consist of a letter followed by numbers. The BMW 3 Series is a mid-size sedan produced by BMW, known for its excellent handling. Currently, the new BMW 3 Series is only available in the 325 model, which is equipped with a low-power version of a 2.0-liter turbocharged engine. This engine delivers a maximum power of 135 kW, a maximum torque of 300 Nm, with a maximum power output achieved at 5,000 to 6,000 rpm and a maximum torque available from 1,350 to 4,000 rpm. The engine is paired with an 8-speed automatic transmission. The dimensions of the BMW 3 Series are 4,734 mm in length, 1,811 mm in width, and 1,455 mm in height, with a wheelbase of 2,920 mm. The front suspension features a double-joint independent suspension, while the rear suspension uses a multi-link independent suspension.
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What Causes the Humming Sound When Driving a BMW 3 Series?

BMW 3 Series driving with a humming sound is caused by: body resonance effects and abnormal wear of the wheel hub bearings. When this situation occurs, it is recommended to go to a 4S shop to check the wheel hub bearings and whether there is body resonance. The BMW 3 Series is a sporty B-class car under BMW. The car is equipped with a low-power version of the 2.0-liter turbocharged engine, a medium-power version of the 2.0-liter turbocharged engine, and a high-power version of the 2.0-liter turbocharged engine. Among them, the low-power version of the 2.0-liter turbocharged engine has 156 horsepower and a maximum torque of 250 Nm, with the maximum torque speed ranging from 1250 to 4000 rpm and the maximum power speed ranging from 4500 to 6500 rpm. This engine is equipped with direct injection technology and uses an aluminum alloy cylinder head and block.
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Does the BMW 3 Series have 4-wheel drive?

The BMW 3 Series does offer 4-wheel drive models equipped with BMW's xDrive all-wheel-drive technology. The BMW 3 Series is a mid-size sedan from BMW, representing the automaker's new generation of passenger vehicles. It has a curb weight of 1,465 kg, powered by an inline 4-cylinder gasoline engine, with body dimensions measuring 4,734 mm in length, 1,811 mm in width, and 1,455 mm in height. In terms of exterior design, the domestic version of the new 3 Series largely follows the styling of its overseas counterpart, featuring sharp LED headlights connected to enlarged glossy black kidney grilles, complemented by front air intakes and three-dimensional body lines. The rear showcases straight and angular taillight clusters with L-shaped red light strips inside. The M Sport package version adds two-tone black trim panels and side air vent designs, along with a small spoiler and dual exhaust outlets.
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How to Check the Engine Oil Level in a BMW 3 Series?

To check the engine oil level in a BMW 3 Series, follow these steps: Adjust using the control button above the turn signal in the vehicle information display. Insufficient engine oil will increase friction between engine components, leading to decreased engine performance. Excessive oil will increase the rotational resistance of the crankshaft, causing higher oil consumption, blue smoke emission, and accelerated wear of cylinders and pistons, ultimately shortening the vehicle's lifespan. The BMW 3 Series is a sedan model under the BMW Group, with dimensions of 4734mm in length, 1811mm in width, and 1455mm in height, and a wheelbase of 2920mm. The vehicle features a polygonal double-kidney grille and new Angel Eye headlights, with an additional groove in the middle below the headlights. The bumper lines extend into the groove to connect with the headlights, presenting a smooth and rounded overall design.
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What are the advantages and disadvantages of the auto-hold function?

The advantages of the auto-hold function are: 1. It prevents the vehicle from rolling when encountering short stops such as traffic lights; 2. When starting on an uphill slope, the system automatically brakes to prevent rolling back, and releases the wheels to move forward once the vehicle starts; 3. There is no need to pull the handbrake when parking and locking the car, as the system automatically brakes the wheels, but this feature is only available in some models. The disadvantage of the auto-hold function is: Poor throttle control during reversing may lead to accidents. The auto-hold function is an extension of the Electronic Stability Program (ESP) and controls the four-wheel braking through ESP. During this process, the ECU computer uses sensors installed on the vehicle to detect the vehicle's level and wheel torque, determining whether braking is needed to prevent rolling. The braking force applied to the wheels is not excessive, just enough to stop the vehicle from moving, ensuring there is no severe lurch forward when the accelerator is pressed again.
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Where to Get a Car Key Duplicated?

You can go to a 4S shop or a large repair shop to duplicate car keys. The following is a related introduction to vehicle keys: Functions of car keys: Car key vehicle locating function, closing windows after turning off the engine with the car key, opening windows with the car key, opening the trunk with the car key, and the function of opening only the driver's door with the car key. Maintenance methods for vehicle keys: Do not place them together with metal objects, do not leave spare keys in the car, do not place smart keys together with electronic devices, and do not expose the keys to high temperatures or contact with liquids. Methods for replacing the battery in vehicle keys: Remove the mechanical key, use a hard metal piece to twist open the key along the groove, and then remove the old battery and replace it with a new one.
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