P0301,P0304, and P0300

What is your question?

I've used a car reader on my 2001 Hyundai Tiburon and it told me I had Misfires on Cylinder 1 and 4 plus a random/multiple misfire. I had already changed the spark plug, after that I erased the computer to see how long it takes for the "check Engine" light to come back on. Surely enough 10 minutes later the light turns back on and now i'm at a loss, could it be the Ignition Coils? PS: I used break cleaning to spray the MAF sensor and it went away for a great amount of time (I would say for a month , give or take until the light came back on)

What makes this problem better or worse?

Break Cleaner seemed to turn off the light

How long has your 2001 Hyundai Tiburon had this problem?

a week or two it started