Moin. I have a problem with my softail The moped is built in 1994 with a Harley original carburetor. Original condition not rebuilt. It is a 1338 cm motor inside. The moped runs restlessly in the standing gas and smells of fuel.. The spark plugs are black condemned. From time to time there is a misignition from the carburetor. A potato potato run is not to get there. So far the following parts have been renewed: Manifold gasket gasifiers plug spark plugs spark cable Vdos controli I found the following. Carburettor membrane accelerator pump Ignition sparks Elektronik Ignition lock possible wackler rectifier measured spark plug electrodes distance is cleaned to 1 mm carburettor ultrasonic bath. Tank ventilation All io gas acceptance is great.. Without stuttering only constant speed is not possible at slow drive. The box humps like sow. So slowly I am with my Latin at the end and hope that one of the specialists here will give me a tip or advice. Thank you very much already in advance for your efforts Best Greeting