What is the problem when a motorcycle starts but cannot accelerate?

[LaBrooke]

After a Volkswagen car stalls, continuous noise is generally caused by either an overly rich or overly lean air-fuel mixture in the engine. Engine stalling due to an overly rich air-fuel mixture: Simply put, an overly rich air-fuel mixture means there is excessive fuel injection in the engine. Common causes for this condition may include a faulty oxygen sensor or inaccurate air intake measurement. In such cases, motorcycle stalling is usually due to ignition system failure or fuel system issues. Engine stalling due to an overly lean air-fuel mixture: An overly lean air-fuel mixture means there is insufficient fuel injection in the engine. In contrast to the above scenario, if the needle seat and foam tube fall into the fuel pool, the fuel needle will not be lifted as the piston rises, thus failing to supply adequate gasoline. This results in an even leaner air-fuel mixture, which may fail to ignite. Consequently, stalling during operation becomes a frequent occurrence.