Question about 2002 Harley Davidson XL 1200 C Sportster Custom
My 02 sportster will idle great but when you move the throttle it acts like it floods it out and dies,do you have a suggestion?
Are you running a carb? If so then check to make sure the choke is fully off, also check to make sure that the vent hose from the carb isn't blocked, and also check your gas tank cap. The easy way to do this is to crack it open like you are going to take it off but just enough so that there is no restriction of air into the gas tank. Leave the cap on the tank. Start it and see what she does. Sometimes what acts like flooding out is actually fuel starvation
Also, how old is the gasoline that you are using? If it's over a month old drain it and put in fresh.
Has your bike sat without running for some time? If yes then the carb could be junky and need cleaning.
Have you put any aftermarket parts on it? If you have changed the exhaust pipes, the carb needs to be tuned to the new pipes and if you went to a K & N style airfilter that is going to mean carb tuning as well.
Another thing is to check for vacuum leaks on the back side of the carb to intake manifold, and intake manifold to the heads. Spray bottle with water will cause the engine to react with either a increase in RPM or a decrease in RPM at idle
If anybody has been into the carb then you may have an internal vacuum leak in the carb itself.
Check all the simple stuff first and go from there.
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Posted on Jan 02, 2017
check the spark plugs ,if they are of the correct specification for the engine.
Best would be to replace them .
Hope this helps
Knight. (yamaha XJ750R seca. 1981
Posted on Apr 17, 2009
If it has been stored for an extended period of time I would pull the carburetor and just rebuild it being you have already changed out the fuel.
Posted on Jul 08, 2009
You need to tear the motor down, sounds as if the pistons seized or you broke a connecting rod, or bearings went out.
In any case you need to have someone that knows what they are doing check it out for you.
Posted on Nov 08, 2009
That's a strange one. The only things I can think of suggesting are:
Posted on Dec 09, 2009
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