return line

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denny

Master Mechanic
Feb 4, 2017
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probably been asked a million times so here goes a million and one. has anybody used the canister vapor return line as a fuel return line? 81 malibu, canister is long gone and line has been plugged off with a cap. getting pressure creep from 5.5 at cruse to 10 at idle with unknown age of carter pump. would like to stay with mechanical pump and regulate it to 5.5.
 

Wraith

Royal Smart Person
Jan 13, 2013
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DFW, TX
I'd guess that's 1/4" i.d. line? That should flow around 30gpm at 10psi for 100ft in length, so really it would flow more than that as the length is shorter. Should be more than big enough.
 
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TURNA

Rocket Powered Basset Hound
Jul 24, 2009
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Socialist NY
Yes you can use it. but you need to open up the line in the tank
 

TURNA

Rocket Powered Basset Hound
Jul 24, 2009
10,941
19,990
113
Socialist NY

denny

Master Mechanic
Feb 4, 2017
279
116
43
I'd guess that's 1/4" i.d. line? That should flow around 30gpm at 10psi for 100ft in length, so really it would flow more than that as the length is shorter. Should be more than big enough.
thanks. Denny
 
Jan 13, 2019
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0
1
Be patient I’m sharp as a bowling ball, if the one line is the fuel feed and the vent line is going to be the return, what’s the third line for? Does it just become a tank vent?
I’m getting to tackle a similar deal, when my 307 comes out for a 455.
Thanks, Jim
 
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