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Old 10-26-2021, 12:06 AM   #2
Richard
Senior Member
 
Join Date: Dec 1999
Location: Southern California
Posts: 2,704
Re: Help locating Blazer bed hole(s) for Fuel tank.

Yes the small tube brings vapors to the top so they can be recovered. But it also allows faster filling. Provides a direct path to the inlet for the air displaced by fuel. If it is not there the air has to makes its way back up through the fuel you are putting in. I would not eliminate it. Emissions or not.
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Richard
1972 K10 Custom Deluxe SWB Fleetside
My build https://67-72chevytrucks.com/vboard/...d.php?t=800746
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