fuel vent line advise

steve maluk · Jan 20, 2024

hello again
knowing this is a b body forum but i need help with my1973 challenger rally fuel vent system
fuel tank has 4 vents also seperator has 4 - seems that the 4 on 4 are straight forward two lines coming from front of car ( fuel and vent)
another single line coming off of seperator does it go to small nipple on fuel TANK ?
if so what goes to the vent line from front of car?
large nipple goes to fuel line to front of car with rubber hose
what am i missing
did not take enough pictures
thanks
sjm

Austin Charger · Jan 20, 2024

steve maluk said:
hello again
knowing this is a b body forum but i need help with my1973 challenger rally fuel vent system
fuel tank has 4 vents also seperator has 4 - seems that the 4 on 4 are straight forward two lines coming from front of car ( fuel and vent)
another single line coming off of seperator does it go to small nipple on fuel TANK ?
if so what goes to the vent line from front of car?
large nipple goes to fuel line to front of car with rubber hose
what am i missing
did not take enough pictures
thanks
sjm

View attachment 1594837

View attachment 1594838

the single line coming off of the vapor separator connects to the 3 nipple (smallest one ) valve cover vapor collector on the passenger side. Right under the pass hood hinge. The small line coming off of the sending unit goes to the fuel filter/vapor return just above the fuel pump.

steve maluk · Jan 20, 2024

my car has a canister up in engine compartment right side by washer
i do have a vapor line and fuel line running from engine bay to rear tank - they both run towards the gas tank
if 4 lines off of seperator go to the tank single line off of seperator goes where
two nipples on gas tank one for fuel pickup other smaller nipple seems to belong to a smaller line assuming for vapor
thanks
sjm

Austin Charger · Jan 20, 2024

steve maluk said:
my car has a canister up in engine compartment right side by washer
i do have a vapor line and fuel line running from engine bay to rear tank - they both run towards the gas tank
if 4 lines off of seperator go to the tank single line off of seperator goes where
two nipples on gas tank one for fuel pickup other smaller nipple seems to belong to a smaller line assuming for vapor
thanks
sjm

I forgot about the charcoal canister. I am not too familiar with '73, but I assume that the canister goes to your vapor separator near fuel tank. The smaller line (3/16")? goes to the filter/vapor separator as part of the fuel pump assembly.

Grabbergreendream · Jan 20, 2024

Not sure this will help. Its 73 B I believe.

fuel vent line advise

steve maluk

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Austin Charger

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steve maluk

Well-Known Member

Austin Charger

Well-Known Member

Grabbergreendream

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