The fuel wont go through the lines to get it started

Try starting it with the air filter removed. If it starts, clean the air filter. It could also be the fuel filter. If you replaced all the fuel lines, make sure you didn't get the oil line mixed up with a fuel line

work air out of lines by cracking lines. crank until you hear it try to start, tighten lines and crank until it starts.

i could suggest you to look your fuel line and the fuel filter if are free from any restrictions and if the line has a solid line of fuel(no air). air on the filter or on the line, engine really wont start.
and this assume engine timing is ok?

Fuel reg. is connected to the fuel rail where the return line is connected, my thoughts are you mentioned air in your lines.. crack open fuel lines and run fuel pump to release air from lines. Pump then should prime all lines must be primed turn engine over to release air ( No Smoking) then tighten lines. fuel rail might have valve, (looks like tire valve) if so it is recommended that air is relieved at air valve

Sounds like fuel pump. Your fuel pump relies on fuel to act as coolant. Running it low often makes pump run hot and shortens it's life. Sounds like running out of fuel did just that. Way to test, pull fuel line off in engine compartment and have someone turn key to "ON" (NOT START!!!) position, you should fuel spraying out of line) If not, fuel pump is bad.

Maybe you have a plugged fuel return line.You have a fuel supply line and a fuel return.If its plugged you can not get the air out of the lines.Remove the the line and blow through it If you cant its clogged.Also you can prime the line line by turning your key on and off .You may need to disconnect the fuel line to make sure gas is coming out when you do this

blow the fuel line in to the carburator line untill you see fuel in you engine starer and remove the gloplug to reales the execive fuel

I'm assuming the engine is cranking over while turning the key and wont start. from this assumsion it possible the cam sensor on the timing chain is broken. or no fuel pressure. to test for fuel pressure, turn the igntion key on, locate the fuel line & port on the fuel line, remove the cap & depress the small screader valve by using a small pocket screwdriver, fuel should shoot out with a lot of pressure. no fuel shooting out most likey the fuel pump is bad. if this has good pressure the cam sensor is most likey the cause. to replace the sensor, you need to replace the timing chain.

the filter on fuel pump might be clogged as well or fuel pump needs replaced

ck fuel lines for cracks, also ck vacuum line for lecks.