2008 accent power loss low rpm

08 Accent loses power, misses, and check eng. light flashes at less than 3000/3500RPM. Haven't had chance to get codes, need to get code reader. Any suggestions in mean time. Ran fine up to now.

Wondering what the codes were my 07 is doing the exect same thing after an engine shampoo and hasn't dried out in 2 days and my code reader won't do the new CAN codes
Thx

If the check engine light is flashing, then you are in the process of burning up your converter, and you need to stop driving it. If you washed down your motor, you probably got water in the spark plug tubes and you fouled them up that way.