Ok guys I have 68 xlch and it has a cv carb on it now #is 27490-96A now I had just purchased this bike the problem I am having is when I go to kick it over it is firing and a little smoke comes out of the carb/ airceaner I pulled the plugs and they were a little wet but black. Now I had called the Harley dealer and asked them if they had maybe a hotter plug he told me I have to becarefull which plug I run in this because it could do damage to the piston. I am running a autolite 216 plug in it now well then he had asked me about what kind of carb I told him and he said that is your problem. Now dont get me wrong I am a noob to all of this bike stuff he told me the carb is to big for the bike. He told me when I pull them plugs they should be a tan color. He said a makuni cab 38mm would be the rite carb for this bike easy starting I am lost here guys any help would be great here are some pics of the carb thats on there
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A tan coloured plug is when you do a plug chop at high revs and cut the engine...your problem could be anything.....i'd start at engine timing and points.

 

hmm wondering about the carb is that to big for it you think

 

even if the carb is a little big you can always jet it down right? I am leaning more towards the timing though (firing while it is while the valves are still open on the intake stroke).

 

ok I had looked in the manual and is says for the gap on the plug should be
.020 with the magneto seems to be very small gap ???????

 

I can't argue with the manual on this although, even on small magneto engines, like lawn mowers etc. the typical gap is usually .025.