engine turns over but won't start on 1991 Buick Roadmaster

Car was running but sat for a couple of months.Now the engine turns over but won't start. It has gas but suspect no spark getting to the ignition. Possible problem?

ignition control module inside the distributor
47.00 at advance auto
just plugs in
do it yourself
take the distributor cap off with 2 screws and the control module inside is a half moon black plastic piece with 2 plugins
2 more answers , 1 more comment
You need fuel, compression and spark. I assume compression's OK. Check for spark, check the fuel pressure with a test gauge. If they're OK, then check for injector pulse.
maybe the module went out thats what happened to mine
Could be a crank trigger.... do 5.7's have those?