All, as I posted last year, my 2007, S600, 100k miles had cylinder #1 misfire error, later multiple misfires on the same bank. I changed the spark plugs on that side and the ignition cassette. No improvement. So I changed the center ignition module/voltage regulator. Problem fixed. Several weeks later cylinder 1 misfire was back. (Only #1). Any ideas? I put a bit of dielectric grease on the plugs so the cassette slides easier next time and someone told me this could be a problem and I should remove/clean the grease. But I don't really feel like taking the ignition cassette out again, plus I had identical symptoms before I started doing anything to the car. So I don't want to be replacing the same parts again. No other error except #1 misfire and the usual low engine power.
So what are the recommendations for a next step? Could the problem be related to a poor fuel mixture/injector, and say swapping injectors 1 and 2 plus new injector seals would be the next step? Is there anything else that could be going wrong? I don't suspect low compression as the car was running well many times after resetting the error.
What is so special about the cylinder 1 that the problems always seems to start there?
thanks for your help
So what are the recommendations for a next step? Could the problem be related to a poor fuel mixture/injector, and say swapping injectors 1 and 2 plus new injector seals would be the next step? Is there anything else that could be going wrong? I don't suspect low compression as the car was running well many times after resetting the error.
What is so special about the cylinder 1 that the problems always seems to start there?
thanks for your help