Your bike runs too rich ??Hi, I just bought a 2005 tw with 800 miles on it. Ran great until I got it home then would not start. Went up in elevation 2000 ft, not sure if that's part of the issue. Eventually got it started but never ran smooth after that.
The problems- very slow throttle response, I can open the throttle all the way and it take 4-5 seconds to catch up. If I let it idle it's not smooths it goes up and down in rpms. During riding it acts like it's missing and not running smooth. If I turn the fuel petcock too off it runs very strong until it runs out of gas. Spark plug is black and sooty. It always seems to start great when cold no choke, but after it warms up and I turn it off it has a hard time restarting, takes multiple tries.
What I've done- cleaned the carb put a new needle valve assembly in because the old o ring was rotten. adjusted the float to 11mm. Set the pilot screw to 2-1/2 turns. The carb looked good other than that. I did notice the pilot jet hole was way tinny. Put a fuel filter in. New spark plug and check that it was getting regular spark. Adjusted the valves to factory specs. Cleaned the air filter (I took off the filter and started it to see if the airflow was restricted, when I put the filter back on while it was running it killed the engine) no mice nests or plugged airway.
I'm out of ideas, still wondering if it's the carb or what to check on the electrical system.
Thanks for helping this is my first ever bike and I'm anxious to use it
Whats the main jet you are using?