hard to start or going a little bit then stalling.
http://www.snopes.com/autos/grace/sugar.asp
Probably nothing, this is an old myth. Sugar doesn't affect the engine, even Mythbusters busted this one.
Putting sugar in a gas tank will mean a trip to the garage since the sugar will ruin the gas filter and go into the engine.
it will feel as if you are running out of gas, the car will start sputtering.
smell,and the fact that your car starts:gas gauge
Sugar in the gas tank will not cause the engine to fail because sugar does not dissolve in gas. It will get pulled thru the gas line and into the fuel filter(s) and depending on how much sugar is in the tank, will plug the fuel filter sooner or later. This will cause the car to stall or not stay running. You can either replace the fuel filters until the sugar is gone or get the car to a mechanic and have the gas tank removed and flushed out. This is not a do-it-yourself project. You could also drive the car to the mechanic and then have the fuel filter replaced while they are flushing the gas tank.
put sugar in the gas tank
Sugar sits on the bottom of the tank like sand unless you have some water in the tank also.
put sugar in the gas tank
Sugar
Plugs up the fuel filter if the sugar makes it that far.
Someone probably put sugar in your gas tank.