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Dual tank switch plumbing questions

dremu

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Truck has two tanks. Each pickup has three connections, which I believe are 3/8" (feed to fuel pump), 5/16" (return from fuel pump) and 1/4" (vent line).

I am thinking that the two vent lines should be tee'd together, no need to be switched, and then go up front to the charcoal canister?

The feed and return lines should then be switched from tank to tank to the matching lines that lead up front?

Are there other lines I should know about or do anything with? There's a mess of stuff down there and it's been hacked at, so I'm trying to un-mess it and make both tanks work.

-- A
 
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