97 Ford F250 7.3L run rough on the rear tank

[wrhatt]

I have a 97 Ford F250 7.3L diesel that runs rough when I'm pulling fuel from the rear tank. When I switch to the front tank the engine smooths out and run's fine. I filled both tanks at the same time from the same fuel station. Any ideas as to what is wrong?

[taillight]

You might have something like water in that tank or maybe a air leak and you are getting air bubbles.

[wrhatt]

Thank you for the suggestion.