You could have a fuel or ignition problem if it cranks strong but won't start.
Here's a directory link for you if you want to see an Isuzu specialist:
http://repairpal.com/isuzu-repair-in-columbus-georgia
RepairPal Certified shops can diagnose and repair your 2001 Isuzu Rodeo. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.