I have a 17 Hyundai Elantra. The check engine light came on. The code read miss fire in cylinder 1. I have changed the spark plugs, ignition coils and now the fuel injectors. Then engine is still shaking when idle. It has about 75,000 miles on it.

 

Can you tell us which engine is in your vehicle?
Is your vehicle used mostly for local driving or is it used on some highway driving?
Was the engine checked for any codes after the work was done?
Did you do the work or did you have it done someplace else?
Where did you get the parts if you did your own work?
How much have you driven it after the work was completed?


You may be wondering why we ask so many questions.
New vehicles today are much more complicated and much more info is needed to help diagnose problems. Just how and where one drives can influence some problems cropping up. Sometimes one person can describe a problem one way and another person can describe it another way and that is why we always ask for the codes.