If a 93 Grand Prix LE turns over but will not start could it just be a weak battery or could it be a fuel system problem?

test your fuel system turn your key to the on position under the hood by the throttle body is fuel line and a test point remove the cap and press the vaulve down if the fuel preesure is good it will shoot up in the air to test the spark pull a spark plug wire from the plug and put a old spark plug in the wire hold the wire by the block and have someone turn the engine over and look for spark if there is no spark check your coil pack if there is no fuel pressure check the fuel filter and fuel pump. Also, I would check your ECM batt fuse in the engine compartment. I replaced my fuel pump only to find out that instead of spending $80 on this part, I could have instead looked for a short somewhere in the wires and replaced the $.50 fuse.