Hi everyone Just bought my first H.d. motorcycle. I have been riding a bike for four years now. I really enjoy ridiing. However since the purchase of the hd 2007 xl1200l sportster I am spending more time working on it. I purchased the bike used from a private individual. The issue I am having is at idle when cold or hot the motor seems to stumble and miss. Furthermore as I roll on the throttle and hold steady at that rpm( just a tad bit above idle) the stumbling and back firing issue increases. during moderate to heavy acceleration no problems during deacelration no problems. I changed and gap both plugs used 6r12 gapped at .040 with a wire gage. Spark plugs where torque per the manual 18 ft lbs. I also changed the air filter used stock hd air cleaner. Air cleaner was torque to service manual specs. yo yea I did buy the 2007 sportster h.d service manual 99484-07aq. changed the oil with new filter and used syns 20-50w hd oil. Now the bike is bone stock no mods what so ever It still has the stock exhaust. I took the bike to the dealer right after I brought it home. They told me the ilde was fine. finally any way to tighten up the throttle handle. As I was test riding the bike It was diffcult to hold the throttle at a steady state due the bike go over the road surface ( maybe a tighter spring on the throttle ) Thanks Guys ayp
I agree may be intake related, and the procedure for proper throttle adjustment should be in that manual you bought. Along with troubleshooting tips.
Do you have any codes?
Leave the gun. Take the cannoli.
borrowed from gtrman66
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I have no codes this is a fuel injected bike and is the first bike I worked on with fuel injection so I am not very familar with the system how do you go about getting error codes. Can Use the service manual I purchased ? thanks Ayp
Go to the electrical section and read the sticky on how to read codes. That info is not in your manual. That info is only in the electrical manual. Look up the codes in the electrical section of this forum also. Let us know what you find.