5 'problems' and how to fix them on motorbikes in cold weather

(Baonghean.vn) - Cold weather has a significant impact on the details and components of motorbikes, causing the vehicle's operations to no longer be as precise as in the summer days. Therefore, when using a motorbike in the winter, you are likely to encounter the following errors, and if you know how to handle these problems, they are no longer serious.

1. Difficult to start, uneven noise

In cold weather, the fuel's ability to evaporate is reduced, making the fuel-air mixture often not rich enough (lean) compared to a hot engine or warm weather. Therefore, the air-fuel ratio at the carburetor directly affects the vehicle's ability to start in cold weather.

The cause of a motorbike being difficult to start often comes from the carburetor and the ignition area is affected.

In some cases, when the weather is cold or the humidity is high, the amount of air in the engine condenses into small water droplets in the carburetor and fuel line. Therefore, the amount of air needed to start the car is insufficient, causing difficulty starting.

To fix this problem, close the choke to supply more fuel to the combustion chamber and make the engine easier to start. After the engine is running smoothly, open the choke back to its original state.

If the vehicle is left idle for 6 hours or more during the day, turn off the ignition and kick start the vehicle before starting the engine.

2. "Jittery" when first operating

With motorbikes, the phenomenon of "jerking" when first operating in cold weather is quite common, especially with manual transmission motorbikes.

The reason is that when the engine is running in a cold state: low temperature reduces the lubricating ability of the engine oil. At the same time, the combustion chamber temperature has not reached the required temperature. And this is also the time when engine wear is at a high level.

Solution: Every morning, let the vehicle run in idle mode for about 1 or 2 minutes. When you turn the throttle, if the engine runs smoothly and evenly, that means the engine and oil have reached the required temperature.

Do not immediately turn the throttle all the way when the car has just started, this can cause the car to choke, stall, and also cause the car to quickly break down.

With a scooter, you need to keep the throttle steady when starting, then gradually increase the throttle. With a motorbike, you should start from 1st gear, gradually increase to 2nd gear and run at least the first 1 km in 3rd gear, then increase to 4th gear.

3. Car emits black smoke

When the car has black smoke coming out of the exhaust pipe, it means that there is a quantity of unburned gasoline. This problem can have many different causes, so check accordingly.

- When starting the engine using the starter system (need choke, or starter enrichment circuit). Then you forget to close this system or this system is stuck, which may lead to black smoke coming out of the exhaust pipe.

- The air filter is clogged or dirty, resulting in insufficient air intake to mix with gasoline, causing the fuel mixture to have too much gasoline and not enough to completely burn the mixture, causing black smoke to come out of the exhaust pipe.

- The fuel system (carburetor) has a problem, so it cannot control the amount of gasoline and air mixed into the mixture, so the mixture ratio is not suitable, causing incomplete combustion, leading to black smoke.

4. Hard brake lever

Normally, when the weather turns cold, the dry air dries out the throttle and brake oil, making it difficult to use and unsafe to operate.

To handle this phenomenon, you should combine two methods:

- Do not let the brake cable get too tight.

If the brake cable is too tight, the hand will lose feeling when it is cold, so the braking force will be stronger than usual; too tight brake cable also makes sudden braking more likely, causing safety loss.

- Brake line and brake system maintenance

Maintain and lubricate the entire vehicle regularly. Flush and lubricate whenever the brake and throttle cables become heavy or stuck.

In addition, brake fluid also needs to be replaced if the brake fluid has been used for too long, or the brake pads are old, worn, have lost braking force, or the brake disc is warped...

5. Car flooded

When the vehicle stalls due to flooding, do not try to restart it (water may have entered the cylinder). At this time, turn off the ignition, put the vehicle on the main stand, remove the spark plug and kick it a few times to let all the water out of the cylinder, then install the spark plug to kick it to start.

If the car does not stall, check the engine oil immediately when you get home. If the oil changes color (the color of the oil changes depending on the level of water in it, from yellow to milky white), you must flush the engine and change the engine oil. If the oil does not change color, you should check it again after 1-2 days (many cars do not change color immediately, but a day later).

More frequent inspection and maintenance is recommended than the standard schedule when driving during the cold, rainy season.

Ngoc Anh

(Synthetic)