Does a 1975 Harley Davidson motorcyle need to have lead added to unleaded gasoline to run correctly?

Does a 1975 Harley Davidson motorcyle need to have lead added to unleaded gasoline to run correctly?
Does a 1975 harley davidson motorcycle need lead added to unleaded gasoline to run correctly?

No. Check the gap on your spark plugs

No the primary purpose for lead in gasoline was to lubricate the valves but a 1975 harley should be fine on unleaded gasoline. If its running rough check your plugs first as previously mentioned. GOOD LUCK, AC

2000 Duece engine light is on and engine seems to be running fine. Oil recently changed and bike was washed the day before. What else should I check?