gq5

About a year ago, I started to notice my car was rough when I started it, and gas miledge was decreasing. Then one day I started the car, and it shook violently. I had to replace a fuel injector. Today, I start my car, and it shook violently, and the check engine light was on just like before. I drove it to school because i had no choice. But when I got out to go home, the car was fine.


What could this have been? I am almost positive it is the fuel injectors. Do they just need a cleaning?? Should I have professionals clean them? Thanks for the info.