Hello Mercedes experts. I am in need of some help with a 1971 300 sel 6.3. The car starts and runs beautifully 99% of the time. I have been encountering an issue with it shutting down while driving. It is very intermittent. Most of the time it is just a hiccup, it will cut out for about 10 seconds and then pick up again, but it has cut out for as long as 30 min a couple of times. It does not lose power when this happens ( radio,lights,etc still work). I initally thought it was the coil. One of the instances it cut out for 30 min. I installed a new coil and it started right up and ran fine for a week before acting up. I feel it is ignition related. Any help is greatly appreciated.