Rain
If the alternator is installed incorrectly, yes, it can drain the battery.
easily unattach the hose coming from the tank leading to the carburetor turn the gas ''on'' and drain and then turn to "reserve" and drain the rest of the gas.
drain or gully may have another inlet coming into same pipe via a junction under the floor
Could be the leak is coming from higher up like a pan gasket or rocker cover gasket, and collecting on the drain plug. Bad drain plug gaskets usually leak continuously whether the engine is running or not.
It might
Yes, it could come out of the ac drain on the passenger side.Yes, it could come out of the ac drain on the passenger side.
The answer in most cases is YES. The reason that the air is coming out of the condensate overflow (drain) tubes is because there is a positive air pressure being exerted by air handler or furnace. There are some systems where there is a negative air draw on the drain and could possibly be capped. Depending on the configuration of the unit and the location of the evaporator coil it could be a normal part of the operation of the condensate overflow to have air coming out. Depending on the way the condensate drain was designed, it may be required to be "open" in order to drain properly. Covering or capping the drain opening could cause it not drain properly or back up. There is no way to know if should be covered or not from a discussion. You would have to see the actual drain design and orientation of the equipment to decide if it should be covered. It was designed and installed that way then leave it alone. Otherwise, a professional should SEE it before making any changes.
The drain pipe is cracked or broken at some point under the slab and where it is coming out is the first crack in the cement it found. The break may be in the general area where it is coming out or a ways away from it. There is no real way of telling without running a camera down the drain and possible seeing the break.
I suggest you get a Pest Control Person and they maybe could put some bug killer in your drain. The Bug Killer that they use is usually enviromently safe. Also the Pest Control Guy might be able to find out where they are coming from.
I've read in several places that pouring vinegar down the dishwasher drain (a lot) and then running the empty dishwasher will kill the ants and keep them from coming back.
Few fuel tanks have a drain plug. It is usually necessary to disconnect a fuel line, pump or syphon it out. You could always leave the engine running until it runs out of fuel.
If it is leaking on the passenger side, out side of the vehicle, then this is normal. It is condensation coming from the evaporator core. If it is leaking INSIDE the vehicle, then you have a clogged evaporator core vent drain. Clearing the drain should clear the problem.