What are the reasons for the high temperature of Honda CB400X?

1 Answers
MacDelaney
07/29/25 3:25pm
Motorcycle engines operate under high-temperature conditions, with the maximum temperature during combustion of the combustible mixture reaching over 2000 degrees Celsius. The heat from high-temperature gases and friction generated by moving engine components can cause the temperature of parts such as pistons, cylinder blocks, and cylinder heads to rise. High temperatures can lead to thermal deformation, reducing the mechanical strength of engine components and altering normal clearances due to excessive thermal expansion. Cooling System: Motorcycle engines must have a reliable cooling system to ensure normal operation. The normal working temperature of a motorcycle engine under load should not be too low or too high, with the optimal lubricating oil temperature being around 70 degrees Celsius. Excessive engine temperature will result in decreased performance and may even cause the engine to continue running after turning off the ignition switch. Oil stains on the cylinder head and block may burn and smoke, and oil leaks may occur. Hazards: Engine overheating poses significant risks, including decreased motorcycle performance and increased fuel consumption; abnormal combustion of the air-fuel mixture; degradation and coking of lubricating oil, leading to the destruction of oil films between moving parts and accelerated wear; seizure of big and small end bearings of the crankshaft and connecting rod, as well as failures such as piston ring breakage, cylinder scoring, and seizure; and shortened engine lifespan, endangering the rider's safety.
Was this review help?
18
3
Share
More Forum Discussions

Where is the activation button for the 2021 Emgrand center control screen?

There is no activation button, only a reset button. The reset button for the Geely Emgrand center control screen is located on the screen itself, marked with an RST symbol. If the center control screen malfunctions, you can use a paperclip or toothpick to press the RST hole on the screen to restore it to its initial state. More details about the center control screen are as follows: 1. Introduction: The center console color screen is a display located on the dashboard, primarily showing car audio, navigation, vehicle information, and rearview camera images. It can be either a single-touch or multi-touch LCD screen. Most models have the color screen positioned near the center console, but some newer designs integrate it with the instrument panel. A larger screen does not necessarily mean better clarity, as clarity depends on screen resolution. Aftermarket installation of a color screen may require dismantling and modifying the center console, which, if not done properly, can damage internal components and cause future driving noise. Some models' center console color screens not only display rich information but also support touch operations and human-machine interactions. 2. Technical Requirements: Due to its unique application environment, the technical requirements for automotive LCD screens are much higher than those for traditional LED displays. They must be resistant to moisture, rain, dust, lightning, static electricity, corrosion, UV rays, sunlight, interference, cold, vibration, and oxidation. Additionally, they must include protection against overcurrent, overvoltage, short circuits, and undervoltage to qualify as a standard automotive screen.
7
1
Share

What Causes the ABS Light to Illuminate in a Buick?

ABS light illumination can occur in various states, with different causes and solutions for each state, as detailed below: State 1: ABS warning light remains constantly lit (most common). Cause 1: The ABS wheel speed sensor's sensing area is covered by dirt, mud, or other contaminants, affecting its ability to detect the corresponding wheel speed signal. This prevents the ABS control module from determining the vehicle speed and calculating the wheel slip rate, thus failing to issue appropriate commands to regulate braking. Solution: Clean the contaminants from the wheel speed sensor and adjust the gap between the sensor and the tone ring to restore normal function. Cause 2: Poor signal transmission due to loose system wiring connections or faulty ABS relay contacts, leading to system malfunction. Solution: Inspect wiring connections and reconnect any loose terminals. State 2: ABS warning light illuminates intermittently and turns off during acceleration. Cause: When multiple electrical components are in use, the battery voltage may drop below 10.5V. As engine speed increases and voltage rises, the ABS indicator turns off. This can also occur if the ABS system power supply voltage is too low due to poor terminal contact or grounding issues. Solution: Check battery specific gravity; inspect the charging system; examine the power supply (e.g., voltage relay or poor power contact). State 3: ABS warning light remains lit after engine start and only turns off when the engine is turned off (IGFF). Cause: Poor grounding contact of the ABS hydraulic valve body; faulty wiring connections at the ABS hydraulic valve body; ABS control module malfunction. Solution: Loosen and retighten the hydraulic valve body grounding screw, cleaning the contact surface if necessary; check for enlarged terminal gaps; replace the ABS or ABS/ASR control module. State 4: ABS warning light illuminates during high-speed driving. Cause: At high speeds, the ABS control module detects a significant discrepancy between rear and front wheel speed signals; incorrect tire or wheel rim specifications. Solution: Refer to the vehicle's specified tire and wheel rim dimensions, typically listed on the fuel filler cap sticker. State 5: ABS warning light illuminates intermittently. Cause: Improper adjustment of the brake light switch; poor internal contact in the brake light. Solution: With the engine running, press the brake pedal and manually push the brake switch linkage fully downward, then release the pedal to reset its position; replace the brake light switch if necessary. If the ABS warning light is illuminated, it is advisable to avoid continued driving. An illuminated ABS light indicates a malfunction in the anti-lock braking system, which may cause wheel lock-up during emergency braking, leading to loss of vehicle control and skidding. This poses significant safety risks as it prevents the driver from effectively decelerating or adjusting the vehicle's trajectory.
2
2
Share

What are the functions of tire balancing weights?

Tire balancing weights serve the following purposes: 1. Maintain dynamic balance of wheels during high-speed rotation; 2. Extend tire service life and ensure normal vehicle performance; 3. Reduce wear on vehicle suspension systems; 4. Minimize component wear caused by wheel imbalance during driving. Also known as wheel weights, these are counterweight components installed on wheels that reduce vibration amplitude during high-speed rotation by minimizing mass differences between tires. Installation methods vary based on rim material: 1. For steel rims, simply hammer the weights directly onto the rim; 2. For aluminum alloy rims, double-sided adhesive tape is required for attachment.
18
3
Share

Is It Necessary to Replace a Tire After It Gets Punctured?

Tire puncture does not necessarily require replacement: 1. If the puncture hole is small, you can take it to a professional tire repair shop to have the tire patched and then continue using it. However, be cautious not to drive too fast on highways or for extended periods afterward. 2. If the puncture hole in the tread exceeds 6mm in diameter, repairing it becomes pointless, and the punctured tire must be replaced to ensure driving safety. Tires are circular elastic rubber products mounted on various vehicles or machinery, typically fitted on metal rims. They support the vehicle body, absorb external shocks, maintain contact with the road surface, and ensure driving performance.
16
0
Share

Does the Haval H2 have welcome lights?

Haval H2 has welcome lights. Taking the 2018 Haval H2 as an example, it is a compact SUV with body dimensions of 4365mm in length, 1814mm in width, and 1710mm in height, a wheelbase of 2560mm, a fuel tank capacity of 50 liters, and a curb weight of 1450kg. The 2018 Haval H2 features a front MacPherson independent suspension and a rear multi-link independent suspension. It is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 150PS, a maximum torque of 210Nm, and a maximum power of 110kW, paired with a 6-speed manual transmission.
15
4
Share

What is the fuel tank capacity of a smart car?

smart cars have a 33-liter fuel tank. The automotive fuel tank stores the working fluid required for the hydraulic system and also functions to dissipate heat, precipitate impurities, and separate air bubbles from the liquid. Taking the 2019 smart as an example, its body dimensions are: length 2695mm, width 1663mm, height 1555mm, with a wheelbase of 1873mm and a curb weight of 965kg. The 2019 smart features a McPherson strut front suspension and a torsion beam rear suspension. It is equipped with a 0.9-liter turbocharged engine, delivering a maximum horsepower of 90ps, a maximum power output of 66kW, and a peak torque of 135Nm, paired with a 6-speed dual-clutch transmission.
19
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.