2015 Kenworth dual fuel gauge help!

Just to get you started, how I think these work is that the truck draws from and returns to each tank at the same time. They are supposed to be self equalizing, but either a vent is plugged, or there's another issue such as a plugged junction valve( if it has one). I for sure would not take the chance of running a tank empty. I'm #### sure they're not designed to work that way.

 

Good idea. I actually really like the idea of a gauge in each tank because you can see at a glance whats going on. All too often when there's a problem with equalization you don't find out til you go to fill, or take the cap off the non-gauge side, or you stop for a walk around, and there's fuel running out of the passenger side overflow even though your driver side tank is way down. (This last one always makes me crazy).

 

A switch to check level in each tank, with a sending unit in each tank, and sharing the same gauge is nothing new. It is not real common. Trucks today are duel draw duel return. If either one runs out you are out of gas, I mean fuel. Duel gauges is new to me and there maybe other changes.

 

Really?? The dealer couldn't help you with this question? They draw from both all the time. Just saves you from having to flip a switch to change the gauge from side to side. As you fill it you should see them going up together pr independantly if you are filling one side at a time.

 

The two gauge fuel system the small the large tank will drop about a 1/4 to half then the bottom quage will start to drop till the 1/8 mark below half then the top quage will run down to empty the red lite will come on and your bottom gauge will be showing between just below half or too the 1/4 tank mark you can drive with out worry till the red lite on the bottom gauge also comes on but make sure your real close to a fuel stop so don't worry about running the left tank dry it actually will still have a bit of fuel in the tank won't run completely dry it took a while for me to figure it out as well