Fuel pump noise?

[Ben70_imp]

The "priming" noise my fuel pump has always made with key on during the gauge sweep has changed, after riding a ways, to a louder and more shrill noise when restarting a warm engine after, say, a fuel stop. If I go out in the garage and try it cold, it's normal. Any ideas? I have about 3000 miles on it.
It doesn't seem to continue after startup that I can hear, anyway. I plan to keep riding and just see what happens, especially if nobody else has noticed this. Thanks

Ben

[Lord Popgun]

Is it under warranty? If you can repeat this consistantly, I'd show my dealer. Fuel pumps are expensive.

[Ben70_imp]

No warranty on my '13 purchased used. I will just monitor it for now. Thanks.

Ben

[Nortoon_imp]

Cold gas pumped from underground tanks?

[Ben70_imp]

No, happens other than at fillups, but thanks for the thought! I was thinking at one point it was a hotter than usual that caused it with the pump located right over the cylinders. I am going to try it again this afternoon and see what happens. It's definitely not subtle. hopefully it will just go away

Ben

[Elipten_imp]

I would remove it, soak in Techron for a week. And then pulse with voltage while in Techron then reinstall and see if that cleans up the noise


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[mininsx_imp]

I have a '13 and the fuel pump noise is different sometimes on mine, but I pay no attention to it, I figure it's the nature of the beast.

[dave]

The sound of my fuel pump varies also (2014 Dlx). Sometimes it is just louder. The first time it got really loud was when I had around 1,500 miles on the bike, so I took it to my dealer to see what they thought. They ensured me that the sound was "normal", and they demonstrated that a used, 2013 CB1100 on the floor sounded nearly identical. I have found that it sounds louder when the fuel tank is nearly empty, compared to a full tank, and this might be because the empty tank resonates the sound louder. I have 13,000+ miles on the bike now and the pump is still working.

[Ben70_imp]

Thanks for the input, guys. I have ridden for several days and several hundred miles since I last noticed it. Seems the forum ju ju has banished it to whence it came. I will poke this thread again if I experience any side of the road time, or if it comes back worse, whatever.
It's comforting to note there hasn't been a rash of ANY real problems with this bike. When I was shopping last year the Guzzi forum was kind of amusing. Apparently you almost needed to be a technician just to get a new bike home in some cases. Not bashing! Rboe alert!

[the Ferret]

Lol try a Ducati forum. My son rides a Monster 696. He sent me a link to that forum one day in which 5 out of the first 6 threads having to do with their motorcycles mysteriously not starting all of a sudden.