It is not normal for the carburetor to be sweating gas when the motorcycle is parked for an extended period of time. This could indicate a potential issue with the carburetor or the fuel system.
In humid environments, such as Costa Rica, condensation can occur on various parts of the motorcycle, including the carburetor. However, excessive sweating of gas could suggest a problem with the float valve or needle and seat within the carburetor, causing it to leak fuel.
It is recommended to have the carburetor inspected and potentially cleaned by a qualified mechanic. They can check for any worn or damaged components and ensure that the float valve is functioning correctly. Additionally, it may be beneficial to check the fuel lines and connections for any signs of leaks or deterioration.
Addressing the issue promptly can help prevent potential fuel leaks, fuel wastage, and engine performance problems. It's always best to consult with a professional who can provide a proper diagnosis and resolve the issue effectively.