no warning lights or diagnostic codes?

What is your question?

I have had my 2003 Kia Sorento for just three years (started mileage 108876 now has 122212),I have all done so far the crank shaft sensor - complete timing belt kit September 2012,complete brake replacement May 2013,outer tie rod end (RF)May 2013, crankshaft bolt replaced October 2013, sway bar links/bushings all four sides January 2014, three oil changes, ignition coils/spark plugs and the wire set/air filter/transmission fluid replaced May 2014,fuel tank air filter replaced October 2013. I am mentally drained,fed-up, financially broke and left still with no answers to why it is still misfiring??? Please can anyone HELP me!!! Thank you