2002 E350 V10 - EVAP/Vapor Canister Search ?

[Oogs]

Originally Posted by 86Scotty

No, I have no ideas to add. You're probably on the right track if it's been dropped and the shopped fixed all other obvious problems. I had similar problems with my 95 SMB with an oversize tank. Never figured it out while I owned it. Good luck!

Interesting....I've had this as well on my 2013 with transfer flow tank after a fill up with no visible leaks and I've spent a ton of time underneath addressing surface rust and replacing the house battery. May have the shop do a cursory look next time I'm in for service. I do recall SMB adding either a secondary or larger EVAP cannister when they installed the oversize tank.

[86Scotty]

Originally Posted by Oogs

Interesting....I've had this as well on my 2013 with transfer flow tank after a fill up with no visible leaks and I've spent a ton of time underneath addressing surface rust and replacing the house battery. May have the shop do a cursory look next time I'm in for service. I do recall SMB adding either a secondary or larger EVAP cannister when they installed the oversize tank.

Well, my van was old when I got it (95 purchased by by me in 2012 or so) and it was much older technology (460, older Transferflow front and rear tanks I replaced with a single Aerotank designed for a diesel van.

My take was that the Aerotank just didn't work well with the vents and canister on that van or that I had a blockage or leaky vent/line that I never found. It only happened when I filled it to the brim, so that could've been a big part of the problem too.