Add fuel to the tank and charge the battery.
How do you know that it is your car?
It wont start
Your car wont start. lol
use jumpers
What have you welded ?
how does it stall if it wont start?
catalytic converter?
car wont start
Don’t no
Maybe Its The Muffler or the pistons hitting the engine
You may have overheated the engine or seized it.
There is a little plunger switch that tells the car it is in park or neutral so the starter circuit can activate. Cycle through the shifter P-R-N-D... a few times, then go back to park and try again. If that doesnt work, try starting in in Neutral, but keep your foot on the brake pedal so you dont roll.