if you didnt un-connect the battery you could have fried it.
you could have left the battery disconnected. or maybe you drained the battery, you might have to recharge it
could be fuel filter
could be many things but start by having it checked for codes if possible. then check fuel pressure should be about 45psi. could also be a crank sensor, TPS sensor or other problem. when was the fuel filter changed last
no effect
The throtle cable is freezing up. Replace it.
get a new alternator and battery
Have the alternator checked out.
Gonna need to know what is wrong with them to help you.
Incomplete fusion or poor penetration in welding can be caused by inadequate heat input, improper welding technique, improper preparation of the joint surfaces, insufficient welding current, incorrect welding speed, or using the wrong welding process for the specific material being welded.
Probably a dead battery.
check your coil pack.
It could be a dead battery.