Good morning -

went to start my 92 400E this am and it almost wouldn't run. i have been having a problem recently that can be best described as a cylinder dropping out. this has been an intermittant problem - nothing as bad as this morning. the car ran, but was threatening to quit out at any moment. when i went to give it the gas, the rpms would drop - sometimes it would recover and rev, other times it would just stall out.
any ideas as to what the heck is going on?

thanks,
ron