+1 on Tirod3's advice.
I like old kerosene lamps for their ambience at home, and an absolute must is clean, well refined kerosene and a good quality, properly trimmed cotton wick.
I get my wicks and lighting kerosene from a local antique dealer, which is an expensive way to buy them, but I know I will get good clean light from quality supplies.
Strangely, I have a pair of identical Victorian era lamps, one burns best with a straight trimmed wick, the other likes a diagonal trim of about 20 degrees.
Experimentation is the answer to getting a good clean burn, but now that LEDs are getting cheaper, I think the camping kero lamp is fast becoming a relic.