What are the main causes of a Subaru not starting on 1991 Subaru Loyale

I was driving one evening, and the car just stop running in the middle of gassing. I pushed the car to the side of the road and tried to start it. The car is cranking but will not cut on. I had a friend hook jumper cable to the car and tried to start it, no dice. I checked all the fuses and none appear to be bad, no breakage on any of them. When I turn the key without turning on the car, you hear a low buzz from the fuel pump, so I'm assuming this isn't an issue, though a neighbor said it still may be the pump. Any answers will be appreciated. I'm trying to fix this myself for financial reasons.

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2 answers 2 comments
CK SPARK AND FUEL PRESSUR TO START WITH.SHOULD BE 20 TO 24 LBS AT IDLE MAX 36 TO 50 AT CRUIZE
Car turns like it's trying to start, but wont actually start up.
most common failure on the old subarus is the timing belt. get it checked to verify.

Roy
thanks, I will give that a shot.