Fuel System Question

[Bob Gil]

I am wondering if any body out there knows if the return line should go to one tank or both? 

Do you know how your's is plumbed?

[jackhartjr]

Bob, I am not sure, however I would think you want it going to the one you are pulling from.  In that way, especially when it is cold you are getting warm fuel in the tank it is pulling from.  If course you living that close to God...where it warmer...you don't have to worry about the fuel being warmed! LOL
Jack
PS...others may say differently.

[Len Silva]

If the tanks are tied together at the bottom, effectively making it one tank, then it shouldn't matter.  If they are separate tanks and you use a selector valve to choose which tank you are drawing from, then the return also has to go through a selector valve to be returned to the same tank.  Detroits pump a lot of excess fuel back to the tank.  If they are separated it wouldn't take long to empty one tank and overfill the other.

[compedgemarine]

as Len said it would depend if the tanks are connected at the bottom. on my Eagle the tanks have a 1.25" hose connecting them at the bottom. it pulls fuel from the passenger tank and returns to the drivers tank. also on the return it needs to have a tube on it going down near the bottom of the tank or it will cause the fuel to foam up alot as it is dumping back in.
steve

[Bob Gil]

From what I have found so far.  It looks like mine has a return line to one tank and pulls from the other one.  But it looks like I have fuel coming out of the over flow on the tank that it does not pull from.

There are no valves just a cross over line from one tank to the other.

I might have a stopped up cross over line that is causing fuel to come out the over flow.  Now the job of pulling the cross over line off with two 80 gal tanks and both of them full of fuel.  

It might be a good time to invest in a valve for the bottom of each tank.  it might not be necessary but comes in handy when some thing happens to one tank or the cross over line.  I have hit some metal in the highway and knoked a hole in a tank before.  The valve came in hand then turned it off and drained the fuel into the other tank and did not lose as much as I would if I had not had the valve.  I might have lost it all going down the road.