Help please! D15B7 starting issue

I'm having some trouble and was hoping you guys could help me out.. My 93 hatch would not start the other day, and it turns out that the neutral safety switch was to blame. I bypassed that, and it started fine for a couple days. Today, i drove to the gas station on the way to school to pick up a drink, and when i came out my car would not start. It was cranking and turning over, but not starting. There doesnt seem to be any set pattern, its pretty random.. The starter was replaced recently, and the battery is fine. I have plenty of gas, and the spark plugs are only 2 months old. I'm going to check the fuses and relays, but i dont know if i will find the source
. Any advice would be appreciated.
