I have a 1999 E350 with a V10 135,000 miles (a guess, I'd have to look for sure). I noticed after I fill the tank with gas the engine misses, chugs and runs rough at idle. While driving it seems fine.
This is a fairly new condition. I noticed it once in awhile but didn't think much of it. It is doing it more often now. Could it be Evap system? I'll have the codes read soon but also heard not everything sets a code off. What can I check?
It does this with a full tank and sometimes when starting van with 1/2 to 3/4 tank.