HELP!! I am really beginning to not like my 2002 VL800. I have never owned a bike or chopper that has had more problems that I cannot diagnose.
I have not rode the bike for 5-6 days and when I got on this morning to take her out... she decided to only run on one cylinder (front). I am blowing cold exhaust out of the top exhaust. I checked for the obvious fouled plug and doubled checked the vaccumm lines routing. Nothing! Everything looks OK. Before I get upset and decide to sell or worse, take to the stealer, does anyone have any ideas???????
When is the last time you changed the pulgs? They may have gotten fuel fouled. If so they will look good but under pressure they won't fire. Maybe the porcelin got cracked . check the plug wire to see if it is shorting out against the frame or engine. If all this is good then check the valve adj. Do the easy things first. Hope you find the trouble.. ..scruffy
If bike fires on one cylinder, you have an electrical problem.
You say you have spark but might be "weak spark"?.........I would spin in a new set of plugs, if that ain't it you have a spare set. Could be a defective igniter unit or ignition coil for that cylinder.