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Need Help Figuring out fuel lines

cali

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"Hello everyone,

i need so


"Hello everyone,

i need some help figuring out the fuel sistem of my just installed 87' 135 Hp Mercury Black Max, it come with 3 hoses, i connect one of the hoses wich i'm 100% sure that is the gas supply, but at the other side of the engine has 2 more hoses that they are sticked together and are the seem size of the fuel line, one comes out of the oil tank and the other from the bottom of the carburetor.
So, the one from the carb. can be a gas return hose?

Thanks a lot."
 
"bottom of the carb is usually

"bottom of the carb is usually a vacuum line,
oil tank is possibly for crank case ventilation, these are not fuel lines.
Many times the crank case will be ventilated through the vacuum at the bottom of the carb."
 
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