If you dispense your beer with a party pump, which uses air instead of CO2 to drive the beer, you can only expect your beer to remain fresh for 8-12 hours. If you keep your kegs warm, and drive them with CO2 through a jockey box or other faucet, they will most likely last a couple of months.
Rust by definition is the result of the oxidation of metal. One engine manufacturer refers to the process of corrosion in aircraft engines as galvanic corrosion which is a type of corrosion caused by dissimilar metals being in close proximity of each other. In this process an electrolyte such as water also needs to be present. Almost all metals will oxidize or corrode.
The carburetor itself can cause flooding problems, too--particularly the float valve (needle) and seat. As you operate a piece of equipment, it transmits a lot of vibration to these parts. The vibration causes small ridges to form on the float valve.y adjusting the tang, you can prevent carburetor flooding, hard starting and poor fuel economy. To make this adjustment, drain the fuel from the carburetor and remove it from the engine. Turn the carburetor over so that the weight of the float rests on the float valve and seat (see Figure 3, page C 46).