MISFIRE 97w210
I have a 1997 W210 which came up with a couple codes PO306. The Misfire happens at Idol and not all the time. The Check Engine Light goes one and off and sometimes blinks. But mainly runs well. I replaced all the Spark Plugs, the wires, and the coils for all cylinders just to be sure I covered the problem; well it didnt help actually is seamed worse. I have to say that I did not reset the computer before the test drive, however I didnt think that had anything to do with it. Any help in this matter would be great. Thank you all and Safe Travels.
SMIB
Assuming your car has more than 200 kmiles (320 Km), the cylinder heads may need to be reconditioned.
I hope I'm not too late.
Rick



