What to Do When the Ignition Switch of a Motorcycle Has Poor Contact?
2 Answers
Motorcycle ignition switch poor contact can be checked by disassembling to inspect the contact condition of the terminals and handling it accordingly. Below are relevant introductions regarding poor contact in motorcycle ignition switches: 1. Explanation: Some new motorcycles have ignition switches with excessive grease applied, which may sometimes affect contact; the motorcycle ignition switch is connected to the live wire, turning on the circuit when the key is turned on and disconnecting it when the key is turned off. 2. Motorcycle usage precautions: (1) Avoid taking your motorcycle to a car wash or letting others wash it unless absolutely necessary. While car washes may seem well-equipped and operate standardly, their pursuit of efficiency often leads to subpar results, potentially causing faults in spark plugs and various circuits. (2) Always allow a hot motorcycle to cool down before washing it. Sudden rinsing of the engine, exhaust pipe, and other components with cold water, as everyone knows the principle of thermal expansion and contraction, can damage the oil seals in various parts, leading to engine oil leakage—a common reason for slight oil leakage in many motorcycles. It can also cause the chrome plating at the connection between the exhaust pipe and the engine to peel off, oxidize, and rust.
I've been riding motorcycles for many years and have encountered the issue of faulty ignition switch contacts several times. Typical symptoms include stuttering during ignition while riding or the engine stalling without reason. The solution is to first park in a safe place and disconnect the battery to prevent short circuits. I've personally tried spraying WD-40 into the lock cylinder and repeatedly inserting and removing the key a dozen times to clean oxidized contacts. For tools, a regular screwdriver is enough to open the switch. If the contacts are blackened or dirty, lightly sand them smooth with fine sandpaper. Afterwards, reconnect the wiring, ensuring all connections are tight. For prevention, wipe the lock dry with a cloth after rain and cover the bike with a waterproof sheet when parked. If the problem persists, don't force a repair—head to a professional shop for inspection. Develop the habit of wiggling the key before starting to feel for resistance; early detection saves trouble. These small details can make your ride smoother and more worry-free.
