So I was having problems a few days ago with my 88 e150 conversion van not starting. I inevidably got it started after I switched to the rear gas tank from the front one. And everything seemed to be fine after that. And all of a sudden today when I went to fill up, the front tank wouldn't take any gas and I'mpossitive Iit was empty. I filled up the rear and drove home. When I gat there I noticed that there was a trail of fuel and I opened the gas dooor to see gas pushing its way out the gas cap. I pished on the cvap and got spray. I took the entire cap off and it overflower onto the ground. I started it and the gas continually flowed. I switched to the front tank and the fuel subsided. But whenI switched back the same thing happend it filled and started overflowing again. I am not a mechannic so If someone could please help me figure this problem out it would be highly appeciated. thank you

 

Should have a tank valve similar to this one.. It controls flowand can cause tank to tank filling if it's stuck or damaged..

[IMG]local://upfiles/6756/0574FEF5E001432B910A37E0B4E7BBC1.jpg[/IMG]

 

Look up the 93S68 recall. We were installing check valves on the tanks to keep this from happening. Also it has a valve located on the left inner frame that controls this. I've replaced a few of them for the same problem.

http://www.mobileoval.com