97 Tahoe 5.7 liter starting problem

[StevesTahoe]

Hey all,
My Tahoe doesn't want to start up. Lately if I hadn't run it in a few days it would have difficulty starting up....just wouldn't want to fire up...

Here is what I have
1)turns over
2)gets gas -smelled from tailpipe, fuel pump pumps/pressurizes up and is only 5000 miles on it.
3)got spark, checked spark on 1 and 2 spark plug wires, plugs got 30000 miles or less along with rotor and new cap. 180000 miles on engine thats been very well taken care of......
4)No computer codes on hand reader.
5) new battery recently
6)when it crank up lately it ran perfect......but now it won't start up


Dammmdest thing .....She just won't fire up...

Thanks for any help.....