93' 1500 Turns over, won't start

I've got a 93' Silverado sb 5.7 that ran fine since 93'. Three weeks ago it would'nt start, I charged the batt. and about 2 hours later it fired up. Did'nt use it for 3 days, same problem, but this time won't start at all... 3 days later I change the plugs, fires right up, drove it every day for a week. Then one morning I go out, no start????? changed the wires now but still won't fire.. It's been sitting for 3 days, and I try everyday to no avail

Welcome to AF. Check for spark and/or fuel spray from the injectors, are the basic initial diagnostic steps here.

smells of fuel when i try to crank it.. i assume it has spark because it started the last ime it did this......