Hey folks, I have a 2004 Chevy Classic (malibu), 2.2 liter. stock commuter car except for a CB radio and JVC Stereo

-A few nights ago I turned the motor off to get gas and she wouldn't start back up again, cranked wonderfully, wouldn't start. I waited a bit, tried again, started fine... well that's weird....

-Yesterday it happened again, hot motor, no-start, cooler motor, starts fine.

-Today I went to start it cold, wouldn't start, tried some starting fluid, started fine. After the car warmed up I tried starting fluid again, difficult to start, but not impossible.

I'm guessing I have low voltage somewhere in the ignition system, does anyone have ideas on where I should look for bad connections or relays?

Resolved:
The issue was in the ignition system, one too many spills onto the ignition module had completely submerged the control-module-to-coil-pack connector next to the oil filler cap. (Underneath the cooling fins) I eliminated the fuel system as a culprit after reading 52-58 psi under all conditions. A fresh set of spark plug boots didn't hurt either.