I bought a brand new 2010 Ducati 1198s. I started breaking her in, and my last ride was out Ortega Highway and back this past Sunday. Upon my return home when I was cleaning my bike with the ignition off, I noticed a steady subtle hum. When I opened the gas cap, the noise stopped but resumed again when I closed the cap. Eventually it stopped. The Ducati mechanic at the dealership told me the tank was purging, and that this noise was ''normal''. Is this true? Or is there an adjustment (petcock??) that is needed to correct this issue and eliminate the noise? I am not a mechanic by any means but want to be proactive if there is a problem. Please advise. Thanks. Jim Anthony
Mate.What you have got is the tank,fuel etc.cooling down after your ride.Being a sealed unit, the tank,like a car, vents into the inlet manifold and the noise you hear is only seals getting air movement.My 98 st Duke does it and always has.If you lift the fuel cap and let it vent, you wont hear it.Yes its normal.My 83 mhr does it.Hope this helps
Agree, fully normal as described above, my 1198s has got it as well, as did my previous 996
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