Changed starter and alternator and still wont start on 1988 grand am

There are few things that you will have to check. 1) Is the battery properly charged. 2) Are you getting spark at the spark plugs, when you crank the car to start. 3) Is there proper fuel in the car. ---------------- If the battery is not charged properly the car will not start.Check the voltage of the battery .It should be exact 12volt. If there is no spark coming when you crank the engine then its the problem of either the spark plugs or the coil pack.the spark plugs gets power to spark from coil packs.Also check the fuel pump and fuel filter.If the fuel pump and fuel filter are worn out then it will not supply the fuel properly to the engine and this results in no-start problem. If all battery, fuel pump and spark plugs checked out OK then its time to check the wiring connections between the battery to starter and battery to alternator.This will help. Thanks. you can rate this solution and show your appreciation.