The longer gasoline sits, the more likely it is to form deposits and sludge. These deposits can clog fuel injectors, which can lead to engine misfires, idling problems, and stalling. In some cases, clogged fuel injectors can also cause the engine to run too lean, which can damage the pistons and valves.
Vapor lock
Vapor lock occurs when liquid gasoline in the fuel line turns into vapor. This can happen when the fuel line is exposed to heat, such as from the engine or exhaust system. Vapor lock can cause the engine to lose power or stall.
Corrosion
The chemicals in gasoline can corrode fuel lines, fuel pumps, and carburetors. This can lead to leaks and other problems.
Stalling
Old gas can also cause your engine to stall. This is because the gas can no longer provide the engine with the energy it needs to run.
Damage to the fuel system
The chemicals in old gas can damage the fuel system, including the fuel lines, fuel pump, and injectors. This can lead to expensive repairs.
In addition to these problems, old gas can also lead to decreased fuel efficiency and increased emissions.
What to do if you find you have old gas in your tank.
If you think you might have old gas in your tank, it's best to drain it out and fill up with fresh gas. To drain the fuel from your tank, you can either siphon it out, use a fuel transfer pump, or take your car to a mechanic. You will have less trouble if you just replace it altogether
