Professionally rebuilt the 159 gasser in my 69 580. The old carb was gone so I ordered a new Zenith replacement and installed with great results for the first 10 hours of run time. Then the engine began to sputter and miss a bit and seems to be running rich.
A check of the plugs and excess black puffs during power indicate excess fuel. The carb was removed and cleaned and the float level confirmed. The carb was my first thought but now I am looking for thoughts from you. I am going to have the old distributor rebuilt as some real wear is evident on the lobes? Valves adjustment so soon? The carb has a single adjustment screw and really doesn't affect the sputtering. Ideas?
A check of the plugs and excess black puffs during power indicate excess fuel. The carb was removed and cleaned and the float level confirmed. The carb was my first thought but now I am looking for thoughts from you. I am going to have the old distributor rebuilt as some real wear is evident on the lobes? Valves adjustment so soon? The carb has a single adjustment screw and really doesn't affect the sputtering. Ideas?
