Could fuel line from primary tank to Generator be a issue later?

[James E Vining]

I found what I assumed was a line from the LP tank to where the generator used to be is actually from the main fuel tank, could this setup cause problems later on with the ability to pick up fuel in tank?
I did not realize this line went to fuel tank at all, is this a Standard feature?
Should I put on a cap on the line along with the on/off valve to ensure it does not cause any issues later on, at least until I can add a generator??
I do not know how this system is connected if the line to generator has a separate PU or if it uses the same PU as the Engine does? Which I could see causing problems if it is the second Idea I could see it sucking air if the line is not capped off ensuring no leakage.

[Stripe]

Cap it, if anything to keep debris from entering it.  Also, the generator uses a separate p/u line that sits higher than the main p/u line to keep the generator from using up all the fuel and stranding the RV.

[James E Vining]

Thanks, It has a fuel shutoff valve but I was not sure if it could be leaking and if that could of been some of the cause as to why I ran out of fuel when I thought I had more and the gauge said it was not empty but I guess not if it has a separate PU, Thats a good Idea to have the PU higher my luck if it were not that way I'd run myself out of fuel LOL.
So I assume the line is a standard feature or at least a common one for Winne's with Generators?

[DaveVA78Chieftain]

For gasoline operated generators it is a standard.   Some diesel rigs use propane since they only have a diesel tank.  Many larger Onans (7K and above) are diesel. 

[James E Vining]

Thanks so Much I appreciate it, much easier then pulling tank just to look at the aux fuel PU unit.
Specially now that I cannot get it to quit raining           rain, It rains then sunshine's just enough to dry the concrete and then more rain.
Looks like every other day is rain with Chance of stray showers on days not dedicated to rain. 
BTW I hate the rain.

[LonghouseIndian]

   My rig also has the genny pulled out with the fuel line plugged and YES! It can be a problem! I had quite a scare going through the mountains outside of Albuquerque...problem is the gas cap is only vented one way--in! So gassing up in the valley and then climbing a few thousand feet causes unequal pressure between the tank and atmosphere. The gas is forced out that line.
   When you drive a rig like ours you don't think much of people honking at you but truckers are pretty serious and a CB radio can be very helpful. By the time I got to the next exit, found a place to park, and figured out why gasoline was POURING out the BACK of the rig I had probably lost ten gallons. When I unscrewed the gas cap...WHOOOSH!!! Leak stopped...very lucky, could've been a disaster.
   My solution then was to remove the rubber seal from the gas cap and hold it on with duct tape. It was all downhill from there, literally, and I haven't been back to the Rockies yet. Don't really know what to do about it, good luck finding a gas cap that is vented both ways and if your rig is anything like mine that genny fuel line rusted out ten years ago.