I am an absolute beginner with kerosene pressure lanterns but have had some success within the past month. I recently bought 2 Sea Anchor Kerosene Pressure Lanterns from eBay. Same model. Both work fine. I light both of them using the rapid starter or the ignition device where a jet of kerosene spray is lit up and is directed towards the vaporizer. I use the same kerosene in both. One lantern produces soot around the glass chimney every time I light it up! But the other lantern leaves no soot at all on its glass chimney! It is completely clean! I have emptied a litre of kerosene from the tank of the faulty lantern through a fine sieve and there are hardly any sediment particles in it as the photo shows. Should I pour in white vinegar and leave it overnight to clean the kerosene tank of the faulty lantern ? Should I disassemble the red wheel mechanism to try to clean the tube leading to the jet? Has anyone successfully solved this sort of problem? I enclose some photos. I would be very grateful for you guys helping me get to the bottom of this mystery.