Pour a bit a denatured alcohol to the tank swish around and drain.
Rust in fuel tank motorcycle.
If your motorcycle s tank is metal most old japanese bikes are then you can seal your rust free tank with red kote fuel tank sealer and liner.
With the right supplies and some elbow grease you can remove the rust and reseal your own gas tank.
Been sitting for along time and the conde.
Then there is the third option which is for the roll up your sleeves type.
To seal your tank with red kote.
How to remove surface rust.
It gets the fuel inside sloshing around helping to knock naturally forming condensation off the very top of the tank and the use also burns off that stuff letting.
Full tanks displace air which is needed for rust to form.
First you can just replace the tank with an o e m.
Sadly rust can build up without the motorcycle s owner ever noticing even as they tend to other maintenance items.
Negative impacts of rust in the gas tank.
Rust the most common known chemical reaction that occurs on metal.
You can finish the job by coating the tank with a plastic sealant like kreme or if it was just surface rust simply put it back in service.
This gas tank is off a 1992 yamaha xt225 serow.
Second you can send your tank off to a shop to be professionally restored.
Add a 50 50 mix of water and clr to your gas tank and swish it around for a few minutes and drain.
Frequent use keeps the moisture from the air that modern ethanol laced fuel will pull into the tank from getting a hold.
Interior of tank has surface rust or heavy rust.
Tank or entire motorcycle was stored or parked for a period of time with less than the maximum amount of fuel in the tank possibly stored with tank empty.
After about 15 minutes or longer if the rust warrants it drain the tank remove the hardware and flush it with a little fresh gas or brake wash.