all it will do is kill your engine if alot of it gets sucked up by your fuel pump, or else it will cause your exhaust to appear a little bit white until all of the water is burned off.
but if you want to remove it, use seafoam which you can buy at schucks, napa, or autozone, or just put a bottle of rubbing alcohol into your gas tank and run it.
Bleach, or sugar
If you are referring to gasoline mixed with 2 cycle engine oil; not if its a little bit in a large tank filled with normal gas.
Depends on capacity of tank but not much. It is heavier than gas and will go to bottom where pick up is
damage engine no.. will the engine run no.
Sugar sits on the bottom of the tank like sand unless you have some water in the tank also.
water or coca cola
Partially mean - shove a baking potato in the exhaust pipe. Really mean - sugar in the gas tank.
The water sinks to the bottom. If your pick-up in near the bottom your engine will quit. You will need to drain the tank.
The water will be at the bottom of the gas tank, typically near where the outlet to the engine is; so disconnect the outlet hose at this point, and allow water to drain until gas is coming from the hose. Then get some "gas dryer" at the parts store, and add an appropriate amount to the tank to mop up the water under this outlet.
You have a mess.
Iodine in a gas tank will run the engine. It will cause rust, and will corrode the engine to the point that the engine will seize.
It is hard to know when you have water in your gas tank. However, that is no longer the problem that it used to be in the United States. Most of the gasoline in the United States contains alcohol. The alcohol makes the water mix with the gasoline. As water condenses in the gas tank it mixes with the gasoline and is removed in the engine exhaust.