1996 wont start but cranks

hello every one, this is what happen,
i parked, i had my radio playing and i turn the car off, while raido was playing loud, i played for 10-15 mins then i turn off the radio then went to work. came back and the car didn't start, seems like it wanted to so, i ask for a jump, didnt see a negative part for battrety but i grounded it on a screw or metal peice, it didnt start, change spark plugs, didnt start, yesterday i tryied it again and it made that sound like it was about to turn over and start, it did it for a quick sec but it didnt start, like it half turn or some thing. i got half tank of gas, maybe i got a different gas in it, also, now the check engine soon light is on, before i brought it form a friend, they check it out, all was well, and it was, i was driving it.

thanks for all the help and tips, Be bless

What's the CEL code you're getting?

Are you getting spark at the plugs?

Have your battery load tested. If your battery is very old, you can drain it using the radio for 20 minutes enough so that it won't start, but if your connections are bad, that can happen too. What does the voltage measure at the battery with the engine off? With the engine running?

If the battery load tests okay, you should check that the battery terminals are tight (it's under the back seat cushion), the large cables all have good clean connections, the large ground points are all clean.

thanks for the respond guys, the Lord had told us the issue, also got the mechanic confirm what the Lord told us, fuel pump was issue. thanks again you all, be Bless

fuel pump...that`s good news George.In 60 mins you'll have her running again.

Ah, that is interesting. It sounded to me like it wouldn't turn over, indicating a low battery. You didn't mention that it would turn over, but wouldn't catch. A very good description of the problem is important for 'long distance troubleshooting'.