Howdy! New user looking for advice. All help appreciated.

Recently bought 97 Ram 1500 4x4 5.9L Gas. Smelled fuel after I drove it today. Looked underneath and gas was coming from the top of the fuel tank. Noticed some particle board above the tank where the bed should be. Removed the bed liner and found a hole had been cut in the bed to access the top of the fuel tank. I looked at some pictures on line and think there is an auxiliary fuel supply fitting that is not capped. I started the engine and did not see fuel leaking from there. I'm guessing it could be sloshing out while driving. I have attached a photo of the area and am hoping for advice. Should I just cap the white stem at the top left. Or should I drive it around and try to verify where the leak is coming from. Any and all advice is appreciated!

 

I believe there should be a line going to that fitting, to the charcoal cannister. (vapor recovery system.) Might wanna check that out.

Welcome to DF!

 

Thanks! The vacuum diagram shows the rollover valve should go to the canister. rollover valve should be the black circle at top middle of pic. The white inlet to the left of that is what I'm thinking should be capped.

The rollover valve is broke off where the hose would connect so I'll be fixing that as well.

 

The white fitting is for hooking up a external pump to suck out the gas from the tank. It should be capped!

 

Thanks!