Hello All,
I’m from El Paso Texas. Working on fixing up my 1985 K100 I just bought. 
Bike was running fine when I bought it. It was sitting for some time. 
I left it out in the cold one day and now it won’t start. 
If I remember correctly the fuel pump would turn on or make a noise when I turned the key ignition to on. 
When I press the starter button it does make noise and turn on just that the bike won’t turn on. 
I checked the fuses and everything is good, I bought a new Fuel Injection Relay and a new fuel pump and still same issue. 
Any help would be appreciated.
Thank you

Welcome Ecarranza

How I bought the bike and how it is now, work in progress

Are you getting fuel, are you getting spark? Is a good place to start.

A few days ago I resisted the urge to suggest checking that the muffler isn't stuffed with Cuban cigars.

Yea I am getting fuel and spark I already checked that.
Not sure what to check next

Maybe too much fuel, then you might smell it or see fuel dripping out in front of the muffler, then unplugging the pump electrical plug might let it run for a short moment.

Maybe air leaks, then it would be too lean.

What other things have you eliminated?

Maybe give it a service, that often reveals the problem.