HI there all .. I am trying to help my friend who owns a 67 Mercedes 250SE and has had it for well over 30 years... This car sat for 17 years . He towed it to my house and I had pulled the fuel tank and had it boiled out .. I put new plugs ,wires , fuel filter and changed the oil... It is not running very well at all. The car wont start unless the distributor is turned all the way counter clock wise.. I checked the wiring and number 1 is at the little notch on the distributor and the firing order is proper 153624.. I wanted to ask if it could possibly be the timing chain had jumped a notch? Any great help would be appreciated.. Thank you so much and this sure is a wonderful site... I hope I posted in the proper place..,marconi.