Gilly - after replacing the head gasket on my '95 E320 I have a very, very slight miss at idle only and the fuel mileage is suffering a little bit. I did not replace the seals on the fuel injectors and will probably replace them over the next week or so. During the test with the carb cleaner what exactly should I be looking for? Do I just spray the injectors down with it idling? The wiring harness has been changed and I'm pretty sure it is not an ignition "miss" because it is not severe enough. You can barely feel it.