Freewheeler,
I don't know what you're hearing but I promise you...it ain't "sucking". You have to know the principle of the carburetor and how the engine gets fuel from it to understand why you could not hear a sucking sound through the fuel tank. What I think you hear is a differene in resonance through the tank when the cap is off or loose.
Tom
I don't know what you're hearing but I promise you...it ain't "sucking". You have to know the principle of the carburetor and how the engine gets fuel from it to understand why you could not hear a sucking sound through the fuel tank. What I think you hear is a differene in resonance through the tank when the cap is off or loose.
Tom