Why doesn't the motorcycle speed up when the throttle is increased?
2 Answers
The reasons why the motorcycle doesn't speed up when the throttle is increased are as follows: Fuel line blockage: Check if the fuel line is blocked, whether the fuel filter is clogged, the spark plug gap and carbon deposits, and the strength of the high voltage from the ignition coil. If it's not strong, it could be due to a blocked fuel line. Throttle obstruction: After starting, the cold idle speed may be high, but it should normalize after warming up. If it's too high, first check if there's an issue with the throttle, such as an obstruction. Electrical issues: If the speed doesn't increase even when the throttle is fully pressed, and the engine feels weak or muffled, like riding with the choke on, check if the engine is damaged. Dirty throttle body: It could also be due to a dirty throttle body, which should be cleaned.
When I first learned to ride a motorcycle, I also encountered the problem of high throttle but the speed not increasing. The most common cause is likely clutch slippage, where worn clutch plates or improper lubrication prevent power from being transmitted to the rear wheel. A loose or rusted chain can also affect transmission efficiency, making it feel like the throttle is being wasted. Additionally, low tire pressure increases rolling resistance, slowing down the bike. Or, the brake system might be stuck, dragging the wheel while riding. I suggest doing a simple check yourself: pull the clutch and try pushing the bike to see if it moves smoothly, and check the chain tension. If that doesn't help, take it to a repair shop for adjustment—don't delay, as it could affect riding safety. Regular maintenance of the chain and clutch can prevent such issues in the future.
