Okay iv done everything. I own a 03 hyuandai elantra. A month am half back my car started misfiring bad. So I changed wires. An plugs out. No help. So I changed all the fuel injectors out. That fixed up til a few days ago. Its back to misfiring again. Why do the injectors keep going out? Everytime it musfires my check engine light blinks the. It will stop an the light just stays still. Dont understand.