Just curious- if you have multiple return lines that work by vacuum suction from the tank, won't the tank just 'suck' on the one with the least restriction?
Someone asked a similar question about plumbing the cannister and fuel return lines into a tee. I think that any fuel in the line would prevent any vapors from being returned, and unless a one-way valve is installed, any restriction between the Tee and the tank could cause fuel to flow into the charcoal cannister under pressure, and even the one-way valve might be enough to prevent any vapor from leaving the cannister. If you want to keep the cannister functioning, one of the systems that doesn't need a return to the fuel tank might be one way to go?????
One line for fuel return under pressure to the tank, with another one from the cannister seems okay. Multiple vacuum fed return lines seems like a problem.lines
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