I'm desperate

I have a 2000 Dodge stratus SE 126k miles, 2.4 L engine. It ran then it wouldn't turn over in the warmer days. So we changed the relay and it worked! I drove it around for a bit and it died again. My dad was messing with the spark plugs and it turned over. We check the spark plugs and my dad found oil on them insides but not alot, also my dad said 2 spark wires are cracked. My driver's test in on Friday. Please help me.

Edit: when I was parking it and it died it looked like a douche parking job, so at 6am I tried and it ran.