If a motorcycle stalls when it is put in gear, there could be several potential causes for the issue. It may not necessarily be due to a specific part being damaged, but rather a combination of factors. Here are some common reasons why a motorcycle might stall when put in gear:
Clutch Problems: The clutch is responsible for disengaging and engaging the engine power from the transmission. If the clutch isn't fully disengaging when you pull the clutch lever, the motorcycle may stall when shifting into gear. This could be caused by a worn-out clutch plate, a malfunctioning clutch cable, or improper adjustment of the clutch.
Idle Speed: If the idle speed of the motorcycle is set too low, the engine may not generate enough power to prevent stalling when the bike is put in gear. This can happen if the idle screw is misadjusted or if there is an issue with the idle control system.
Fuel System Problems: Issues with the fuel system, such as a clogged fuel filter or a malfunctioning fuel pump, can cause fuel delivery problems. If the engine doesn't receive enough fuel when you engage the gear, it may stall.
Ignition System Issues: A faulty ignition system can lead to a loss of spark, causing the engine to stall. This could be due to a damaged spark plug, a malfunctioning ignition coil, or an issue with the ignition timing.
Engine Problems: Various engine-related problems, such as low compression, a malfunctioning sensor, or a vacuum leak, can contribute to stalling when the motorcycle is put in gear.
It's important to note that without further details or a thorough inspection, it's challenging to pinpoint the exact cause of the problem. If you're experiencing this issue with your motorcycle, it is recommended to have it inspected and diagnosed by a qualified mechanic who can identify the specific issue and provide the necessary repairs.