I have a very poor running M110 in my '77 280E.Cannot be driven more than
5kph. I've been checking everything in the Fuel System(K-Jetronic) And today I have just found a Decent size crack in the Exhaust Manifold where the front and Rear manifold merge into 1 pipe.Could this be my problem? Rough idling,Sputtering,Will not Rev, Stalling?
Thanks Jeremy