Take it to a mechanic and have him determine it.
youll have to drop the gas tank and empty it... dont start it the car either
No it can't and won't hurt anything, It will just lay on the bottom of the tank.
Yes, get that thing out of there. It's gonna ruin your engine.
Someone probably put sugar in your gas tank.
Bleach, or sugar
Personally if you can't siphon out all the liquid out of the tank I would just fill up the tank with gas and let it run.
a lit match or something?
A breather is something you put on your gas tank to let the fumes out. It is the hose coming out of your tank.
If you were trying to get gas or diesel out of a tank just take a hose (preferably smaller to fit just what you need) just put the hose in he tank and suck it through the hose and a suction will be made for it to push through the hose. Have a bucket or something to put it in and you have gas out of your tank.
No. Do not put unleaded gas in a diesel tank.
Into the gas tank.