Ok so my check engine light on the mustang continually comes on throwing a code "small emissions leak" which is typically the gas cap.. After I bought a new one and reset the ecu.. The light came back on with another light that says "check gas cap".. Ive heard that you can use a machine called a "smoker" to check for small pin holes in the fuel lines.. just wanted to see if anyone else has had issues with this?




 
			
			 
					
						 
					
						 
			 Fuel line help..
 Fuel line help..
				

 
					
					
					
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 Originally Posted by green91
 Originally Posted by green91
					

 
			
 
			 
			 
			 Appreciate the looking out!
 Appreciate the looking out!
						 
			
