c280 check engine light

[ericp]

If anyone can help I would appreciate it. I have a 1997 C280. The check engine light has come on. It runs fine unless you really step on accelerator and then it bogs down and runs very rough. After engine is off for 10-15 minutes it is back to normal. If on the highway at high speed and then go through toll it happens all the time. I had autozone read the codes and it came back as cylinders 2 & 6 have misfired. Is there a most logical cause for this? I am assuming it is fuel injectors, wires or plugs.

Thanks