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					Originally Posted by  ol'George
					 
				 
				Well lookie there, 
 Roland done went and found a pretty one with a magic Aladdin lamp embossed on it! 
Do ya 'pose if you took it off, the "magic smoke"or better yet "Jeannie" would get out?    
			
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 He was a little late.  See post #10.  That yellow cap is not an OEM 1864 CC cap.
I would think a vented cap would hurt the performance of the fuel pump.