help me engine wont start!!

[mexlokote]

I have a 1994 chevy s10 blazer 2wd with 4.3 engine
i did a lower and upper intake gasket change and valve cover gasket change.

i did everything very good and i reinstalled the distributor where it was when i pulled it out,

now its all put back together and it will not start,
it turns over but no start
it makes some pop noises on the air manifold that goes from upper intake to air filter, u can hear it popping,

also i have this wire/hose? that i dont know where it goes does anyone know??
its located in the back of the distributor comes from the firewall,

thanks