Allow me to clarify. When I said, "I'm not sure if your fuel tank would pass an inspection," I was referring to motor vehicle safety inspections rather than the more familiar smog inspections.
Idaho apparently does not have smog inspections but it most certainly does have safety inspections because these are driven by federal laws and regulations.
While commercial vehicles, especially medium- and heavy-trucks, are the focus the safety inspections, non-commercial vehicles can be subjected to the same inspections. I was pulled over and underwent a safety inspection when I owned my '49 Int'l Metro. I've never experienced a motorhome safety inspection. However, I have received several first-hand reports from people who were pulled over for a CVI/CVE inspection of their motorhomes.
Likewise, I know someone whose diesel tractor (used to pull a heavy fifth wheel travel trailer) has been subjected to frequent CVI/CVE inspections. (The tractor is on the upper end of medium-duty truck classification.)
Most CVI/CVE inspectors will wave a motorhome through checkpoints but it is within the scope of their duties to conduct an inspection.
I mention all this because, if you fail a CVI/CVE inspection, you will not be allowed to proceed. You must either make repairs on the spot or have the vehicle towed to a repair facility.
The possibility of a fuel leak -- or clear signs of a fuel leak -- is one of the ways to fail a CVI/CVE inspection.
If you get pulled over for a CVI/CVE inspection, don't argue with the inspectors. Most inspections only take 15-30 minutes so let them do their thing and wave you on your way. (Save your arguments for the courts or administration officials.)
Forewarned is preferable to a nasty surprise and trip interruption.
