(08-19-2025, 03:42 PM)It isn't intended to be dave Wrote:

(08-18-2025, 12:38 PM)pekingduck Wrote: That is a negligible, harmless amount of normal corrosion.  In a hot climate, it may be better to keep the tank fuller rather than emptier because condensation in the air within the tank makes it more rust prone.  The tank was manufactured and a rust coating/treatment was applied, and using wire brushes or rough pads can remove it.

If the rust was really bad, the tank can be emptied and removed, and the fuel pump taken out to allow a pretty large opening, and you can easily put your hand inside.  There is a large, replaceable, though pricey, mesh filter attached to the fuel pump, that likely can be cleaned or blown clear, so actual harm from rust is quite unlikely.

Hi Pekingduck. Can the $380.00+ fuel filter  be cleaned, and reused?

Thanks.

(08-18-2025, 05:09 AM)Narciso Wrote: Hi everyone,

I recently bought a very well kept CB1100RS, but I noticed something unusual. There’s quite a lot of rust inside the fuel tank, especially around the top section and near what I believe is the breather hole/vent.

What I find strange is that the bike is absolutely pristine on the outside, yet the rust is concentrated only in this specific area.

My questions are:
How serious is this issue?
Is it something that can be repaired, or should I be thinking about replacing the tank altogether?

I’d really appreciate any advice or experiences you can share. Thanks in advance!