Fuel water separator

Looks like the FS 1000 I run

 

Hello, I know this thread is very old but I’m having this issue as of recently. I had the exact setup you have here and I had issue with trucking starting and dying, also wouldn’t draw fuel from the second tank for some reason. I had to bypass all of this and connect to just 1 tank on drivers side in order for the truck to continue running.

I’m now trying to fix all of this and I’m wondering. Which is input and output on the old separator? I also see you have the retrofitted new one which I think I’m going to do being as this part is obsolete. I have a spin on filter already at the fuel pump, and I’ve tried running all new lines to try and get it to draw from the second tank and it won’t even draw at all, I’m starting to think if this part is necessary at all in order for the second tank to work properly? As it’s pretty elevated (near washer fluid tank).

I do apologize for the long post but I’m scratching my head at this one. Does the fuel lines running have to be elevated this high? Is this whole setup necessary?

ANY input is appreciated. Truck is 1996 International 9400 with a N14 Cummins.

 

Thank you for the message. I didn’t think you’d see it. Do you have a picture of what it looks like now? The issue I’m having is I bypassed it entirely because there was a rust hole in the old separator. Doing that, truck wouldn’t start unless I hooked directly into the driver side tank and run a separate return line. I did run all new hoses to try and remedy it by getting a new T fitting for the suction side of the whole setup and the hoses are bone dry after disconnecting them, since it just kept cranking. If I hook backup to the bypassed setup, it works but only 1 tank drawing. Sorry if it’s confusing but I’m so lost on this issue with the passenger side tank not drawing fuel. I’m thinking if it’s a elevation issue with the lines or if the passenger side tank is used at all for suction or just primary driver side tank. I do thank you for your reply.

 

Okay, I have this also.. did you eliminate that Napa separator combo? Also, is that fitting in the center there special or just a normal T?

 

Thanks! I’ll try calling them tomorrow and see my options. Again, thank you!