2018 Harley-Davidson Fxfb
Problems, recalls and owner-reported issues
Fuel/propulsion system is the leading concern among 1 owner complaints filed for this model year.
What owners report most often
Recalls and investigations
No safety recalls on file.
Representative owner complaints: fuel/propulsion system
1 report, newest first. Show all
Fuel/propulsion system, Apr 26, 2025
Suddenly when riding the motorcycle I discovered a massive fuel leak from the gas cap on to the front cylinder head. I immediately pulled over and inspected the gas cap for tightness. I found that the gasoline cap was sufficiently tight and the sealing surface of the o-ring was okay as well. The gasoline appears to be leaking from the center of the cap where it pops out and lets you turn it. I was not able to tighten the cap in a way that would stop fuel from flowing out of it. I can’t see any seals inside the cap and don’t want to inspect and damage it if this would be beneficial for Harley Davidson to inspect. I am able to duplicate the failure every time I tilt the motorcycle side to side.