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What causes a motorcycle to jerk when the throttle is wide open?

2 Answers

LaDakota

07/29/25 1:24am

The reason a motorcycle jerks when the throttle is wide open is due to issues in the power supply system, fuel delivery system, or valve body damage. Below are detailed explanations and solutions: Power supply system: Spark plugs and ignition coils. If there is poor high-voltage sparking causing intermittent engine misfires, replacing these components can resolve the issue. Engine fuel delivery system: Fuel injectors. If the fuel injectors have carbon buildup, are slightly clogged, or have poor atomization, it can easily lead to irregular fuel injection. Replacing them can solve the problem. Valve body damage: If the transmission experiences jerking, hesitation, or gear slippage, it is usually due to valve body damage or dirty transmission fluid with internal impurities. Especially when dirt and impurities accumulate inside the valve body, blocking the passages, it prevents effective regulation of oil pressure, causing issues like jerking, hesitation, and slippage. Replacing the affected parts can resolve the problem.

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Lilah

08/12/25 5:32am

Every time I ride my motorcycle, when I give it a big throttle, it jerks and feels like the engine is coughing. This issue is usually caused by dirty spark plugs or problems with the ignition system. Carbon buildup on the spark plugs can lead to unstable ignition, resulting in uneven power delivery. It could also be a fuel supply issue, such as a clogged carburetor, uneven fuel pump delivery, or poor-quality fuel mixed with impurities. I encountered this during a long-distance ride before, and it was resolved after cleaning the carburetor and replacing the spark plugs. If the air filter is too dirty and restricts airflow, it can also cause this problem. Regular cleaning and maintenance are recommended, as sudden jerking at high speeds can be dangerous—imagine the risk of stalling and crashing. These details shouldn’t be overlooked when riding for long periods. Safety first, after all.

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