Posted by rustyfarmall on July 22, 2010 at 13:37:17 from (209.152.78.140):
In Reply to: Carb upgrade? posted by nosoup4u on July 22, 2010 at 13:01:05:
nosoup4u said: (quoted from post at 13:01:05 07/22/10) The most common I guess would be flooding and running rich.
It ran and started great for a couple of months, and then suddenly one day while mowing it started coughing black smoke and acting like it wants to die. Ever since then it has been hard to start and run poorly.
I will guess that a speck of rust or other crud has found its way to the needle valve and is preventing it from closing fully. You need to make sure that the fuel inlet fitting on the carb still has the fine mesh, internal screen in place, and that your sediment bowl also has the filtering screen in place.
You should be able to take the carb apart, remove the needle valve, clean it good, and put it right back in.
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