You must not have many problems with that unit Dave. You owned since 09 and only posting a problem now.
We like pictures and details. How about some pics and specs on you Classic????
I am not familiar with your CLASSIC but if you have fills on both sides, does it happen on both sides?
If it has fills on both sides, you could loosen the cap on the opposite side when filling to fix the problem short term. (Just don't try to over-fill this way
On the CLIPPER, you can see the street side fill plumbing inside the #1 cargo bay. If yours is in a cargo bay, the vent may have been damaged at some point? The vent breather should be plumbed into the upper part of the fill tube. If you can see where the vent is in the tube, it may be located down below the length of the fill nozzle??? If so, some type of portable nozzle extension might work.
Originally Posted by Alumaholic
The vent is supposed to keep that from happening.
Since it is happening, the vent must be clogged or crimped.