Check Engine Light
Take it to an auto parts store, autozone, advance, napa, etc. They will read the code for free. Then research the code
It is a misfire in cylinder 4
Make sure all of your spark plug wires are on tight. Check your plugs and coils. Google how to diagnose a misfire
Looking for a Used Tiburon in your area?
CarGurus has 685 nationwide Tiburon listings starting at $1,494.
Search Hyundai Tiburon Questions
Hyundai Tiburon Experts