Question about Harley Davidson XLH 1000 Sportster Motorcycles
There could be any number of reasons for the problem that you described. Your spark plugs could be fouled. Sportsters are very sensitive to this and they are notorious for not want to "clear themselves up" like Big Twins will do. Check your plugs to see if they're fouled.
Next, how long has the bike been sitting? If it has sat up for over three or four months, the carburetor is probably gummed up on the inside due the fuel in the float bowl evaporating and leaving the "varnish" behind to plug up the jets in the carb. You need to take the carb off and thoroughly clean it inside. Then, what type of carb do you have on the bike? You say you adjusted the carb but what did you adjust. If you have the stock carb, gently bottom the idle mixture screw then come back out about 1 1/2 turns. If it's an S&S carb, gently bottom the mixture screw and come back out about 3/4 turns. This is a good starting point for the adjustment on either carb. Make sure you've got fresh fuel in the tank as well. Old fuel just won't run right and todays fuel doesn't last but about 6-9 months before it's flat. Be careful about running the engine for times over 15 minutes from a cold start without a fan or something blowing on it. Sitting still and running for extended periods of time can overheat the top end.
Posted on May 21, 2011
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Posted on Jan 02, 2017
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