Can't start
Determine if it's more of a spark problem or more of a fuel problem.
If it turns over vigorously, then the battery and starter is good.
If it won't start even though it is turning over, then I would spray some starting fluid into the intake and see if it starts momentarily or for a few seconds.
If it does start, then you know you have spark, but no fuel delivery. In which case it could be a bad fuel pump or fuel injectors aren't firing.
If it doesn't start even with the starting fluid, then you may not have spark.
Good luck on this diagnosis.
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