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in your system does the VO return line go all the way back into the WVO tank or does it connect to the fuel line with a T right before the FASS?
 

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It can be done either way. I like having it home run back to the tank. This makes purging air out a little quicker and will make sure all the air is out. If you Tee into the feedline there is a chance an air pocket can get in there when you are changing a filter or purging air out when you open the system to change a failed part. Trust me, something will fail or leak and you will open it up to fix/change....
 

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Discussion Starter #23
^ what he said. home run to the tank is best. but both will work.
 
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