My wife called me at work and said she bearly made it home the 95 C220 suddenly idled rough and had no power (well know this 4 cyl eng is guttless) but this is alarming. I hooked up the scanner and it gave me a code P0304 cylinder 4 misfire. Any ideas? Thanks in advance.

98 ML320
97 C230
95 C220
95 318ti