Could be water.
get it all out empty the fuel tank put good gas in the tank and crank it until it starts
I just started and ran a 79 T-Bird for an hour and fifteen minutes with gas that was last put in in (I am not making this up) April of 2004.
bad fuel pump, no gas in the tank, pluged fuel filter.
Depends on how you get it out. If possible the tank should be drained and the lines disconected and flushed. If you can drain or syphon the tank on a modern fuel injected car the system should circulate the bad gas back to the tank in just a minute or two when trying to start the car. REMEMBER this will not work unless the tank has new good gas in it. The amount of bad gas in the lines should not hurt the new gas as long as you have a Half tank or more of new gas.
This is BAD. You must not try to run the car, if the bleach gets into the engine then it will cause serious damage. Yo will have to have the gas tank replaced.
Add 1 bottle of ordinary rubbing alcohol to the tank. If The Bad gas is just gas that has water in it, then the alcohol will allow the water to "burn" with the gas. == == The best way to do it is kind of a pain. Take the tank off and dump the bad gas out. While the tanks off would be a good time to flush it out too. You can use a ordinary garden hose and siphone the gas out of the tank.
fuel pump in tank along with sending unit bad
Yes Yes
Into the gas tank.
You can stop a leaking gas tank, by making a paste of soap on the hole of the gas tank.
Bad fuel filter or maybe some water in the gas tank.
Because when you fill up the tank there is a evap system which takes the fumes from then tank and runs it through the engine and burns them if the valve is bad in the take it will let you overfill the tank which will saturate the canister and when you start the car the computer thinks it is still sucking in fumes when its not and is making the car run rich will or can cause it to run sluggish or stall when not on the throttle the only way to fix this is to buy a new gas tank or you can just not fill the tank all the way (i have the same problem and i just dont fill mine all the way its cheaper)