For some reason, when you try to drain the fuel, rainwater, rust powder, and other dirt comes out one after another from the inside of the tank. In particular, a fuel tank that has been contaminated with water should be checked in detail and treated as soon as possible. Here, let's explain the basics of how to clean the dirt inside the gas tank.
Fuel is a corrosive, performance-degrading substance.
When you want to start a bike that has not been ridden or left unattended for a while, try draining the fuel first.
If there is any garbage in the tank or rust powder comes out, drain all the fuel and be sure to check the condition of the inside of the tank. If slop or rusty water comes out when you pump it up, you want to drain everything out and find out why. Why did rainwater get mixed in?
The dirty fuel tank interior should be cleaned.
If you see debris or rust powder flowing out of the inside of the tank, let's thoroughly inspect & clean the internal condition of the tank. That is the Sunday Mechanic! The cause of fuel cock failure or overflow from the carburetor is often hidden inside the tank. We cannot clean up the inside of the tank without removing the oil that seems to be deposited and remain on top of the rust, rather than only paying attention to the removal of the rust. Unless there is a very stubborn oil stain or tar from deteriorated fuel, it is best to fill the tank with hot water and wait a day or night before starting the full-scale cleaning after adding an appropriate amount of neutral detergent.
If you're going to "rust out," you really need to "set up."
In the type where the fuel cock is secured with bolts, the tank body is a sealing surface that receives an O-ring or gasket. This type can be leak-proofed by placing a rubber plate between them and tightening a commercially available metal fitting. If the tank body has a convex thread welded to it, it is best to use a cap-type rubber like the foot rubber of a chair to plug it and secure it with a hose band. If a cap is not at hand, it is best to insert a hose of a size that matches the projecting pipe, bend the hose, and secure it with a tie wrap. If set up properly, the subsequent rust removal work can be done efficiently and effectively.
Rely on high-performance "rust removal" chemicals.
Rust removal practice using Hanasaka G Tank Cleaner, a high-performance chemical sold for rust removal inside tanks.
The high-performance chemical is a one-component, neutral specification and is environmentally friendly. While removing rust, it also forms an antioxidant coating on the metal surface after treatment. Hanasaka G Tank Cleaner is a pioneer in rust-removing cleaners exclusively for fuel tanks. After the rust removal process is completed, the inside of the tank should be thoroughly cleaned with tap water. It is better to apply pressure to thoroughly rinse the tank rather than simply pouring water into it. Gargling with a long nozzle air gun and tap water hose is also a good idea. After washing, drain off the water, use a highly concentrated new treatment solution diluted about 5 times the original tank cleaner solution, pour it into the inside of the tank, turn it around to make it adhere to the entire inside wall, remove it, and leave the tank cap open to dry the inside of the tank completely. This finishing process is called rinsing.
POINT
Point 1 - If you notice dirt inside the tank, don't panic and clean the inside!
Point 2 - Hot water and mild detergent are effective in removing oil from fuel.
Point 3 - It is effective to use high-performance rust removal chemicals after removing stains.
It is always a good idea to keep the inside of the fuel tank clean. If you see a light trace of red rust when peeking inside through the tank cap hole, do not hesitate to clean the inside of the tank. It is easy to think that the inside of the tank is fine, but this is just a hope for the owner. If you stick your fingertip inside the tank and find rust powder on the inside wall, it is only a matter of time before the red powder flows down into the carburetor and gets caught on the float valve seat. Eventually, the carburetor should start to overflow.
If you notice that the inside of the tank is dirty or rusty, even if only thinly, do not hesitate to drain the fuel and clean the inside of the tank. Instead of using rust-removing chemicals from the start, first, remove the oil inside the tank with a neutral detergent. Incidentally, if there is only light surface rust as well as oil from the fuel, the surfactant in the neutral detergent can remove the rust. One trick is to increase the temperature of the water mixed with the mild detergent. The higher the temperature, the more effective the cleaning.
Once the oil inside the tank has been removed with a neutral detergent, it is time for a high-performance chemical.
The product used here is Hanasaka G Tank Cleaner, a pioneer in-tank cleaner.
Its use is not difficult, as can be understood by reading the instruction manual attached to the product bottle.
Even a first-time user of Sanmeka should be able to remove rust inside the tank smoothly and easily by following the instructions. If you feel that the rust has not been removed after the first treatment, simply filter the solution (using paper towels, etc.) and reintroduce it, then wait a few more minutes. In any case, if you proceed with the work without haste or impatience, you are sure to get a great effect from this product. Surprisingly, it is also worth mentioning that the used effluent can be disposed of in the same way as general wastewater. The product has been approved as completely safe by a public inspection organization that has analyzed the components of the waste liquid, and a notification of the component analysis is also clearly indicated.
It should also be noted that waste fluids can be reused. If the liquid was treated from a tank with a light degree of rust, it is likely to still have a performance efficacy similar to that of a newly treated liquid. In short, the strength of the treatment capacity seems to depend on the degree of rust in the treated tank and not on the number of times it is used. There are many instances where it can be reused a second or third time. Experienced san-mechs seem to store the waste liquid in polyethylene tanks and reuse it, while clearly indicating the amount of dilution.
Even high-performance rust-removing chemicals cannot show great ability against internal tank contamination other than rust, so use a neutral detergent for kitchen use to remove a certain amount of pre-cleaning before rust-removing practices. Also, when deteriorated fuel is in the form of varnish, it is advisable to use carburetor cleaners such as Yamalube's Super Carburetor Cleaner undiluted type to dissolve the varnish stains and then remove the oil stains.
