...davidson,sportster. what could be the cause? the motor has no modifications. it has a super e carb. i was riding it when i noticed i lost alot of power.
you have to take it apart and do a visible inspection
note: its going to cost you a lot of money, its going to cost more to fix it than what the bike is worth
I say junk it, take your loss, and sell the bike for parts in e bay
Did you check the cylinder with a compression test? Or did it just seem to quit firing? This looks to be a bummer and you maybe in for some real mechanical work. Complete{whole engine} tear down and rebuild. Start with the small stuff 1st and go from there.