And I am giving the shop manager advice on it! The most important thing to me is to make sure all electrical connections are fully continuous meaning di-electric grease, and solid clean, even added, grounds. Today there is spark at the plugs and he didn't tell me what color was burning. I am taking the high road and since it still doesn't start believe that there is some resistance. I just bought this car not running and restoring an 1984 420 prior with good results. I did not have a place to drag it to that storage units reject non working cars. So off to the shop it went and while the manager is pretty young, at least he is listening or appears to. I had went over all fuses before, told him to install high performance plugs and last told him to measure fuel pressure. I have octane booster and premium in the tank. I told him to clean off the cold start valve, grease relays (conductive), grease the ECU save for crossing continuity, testing the oxygen sensor, installing a new rotor (lightly greased), and cleaning the fuel screen in the tank. I still can't wrap my head around the fuel pump in the tank, that on my '84 420 it was behind the passenger rear wheel. The vacuum advance looks like the ones on the old 70s Beetles that I used to easily drop engines on. Any more pearls please tell! I would appreciate vintage Benz enthusiasts here in Austin, Texas! Thank you!