[inapanic]

I have a 2001 accent and my check engine light has gone on...i recently replaced both O2 sensors at the end of last year. I took the car to a hyundai dealership and the computer checked claimed to have said that cyl #2 was misfiring..when i returned to tune the car up..they then said to me that it is not misfiring..its "compressed" and i "need to rebuild the engine as soon as possible, that i am driving on 3 cyl instead of 4." However, i have not lost power or burning oil, there is no knocking from the engine, it is just idling a little on the rough side. i was not aware that there is a thing called a compression test cause hyundai never told me about it..i brought the car to another mechanic who told me about the compression test..so they did their own computer check and a compression test..there is pressure in this cylinder..i think they said it was 110...they changed some plugs and wires and did a bit of a tune up..the light is still on..this mechanic thinks it might be the "ignitor" ...i am worried...i was reading other conversations on this site about the same problem and the MAF was suggested as the problem...could that be the same problem i am having?? if anyone could help me..i want to solve this mystery before winter and i need to know what i am dealing with..also will i be doing more damage to the engine if i continue to drive the car with this light on?? Can anyone help me...PLEASE??