Petromax 828/350CP preheater won't ignite

Helle there and greetings from Denmark.

I recently aquired an old ex-civil defence Petromax 828/350CP Super Rapid. The lamp is proberly from the 60ies or 70ies but totally unused and comes in its original cardboard box.
The lamp ignites and functions fine when using alcohol to preheat the system. All seals are tight!
When I try to use the preheater/Rapid the jet won't ignite. I have tried cleaning both the preheater nozzle and the preheater nozzle fuel hole and two air holes. It still dosn't work. I have tried different levels of pressures as some sources recommend a love pressure of 1-1,5 bar instead of the normally recommended 2 bar. Dosn't work.

Anybody has any surgestions on what to do next?

When the lamp are pressurized and I open the preheater cover what should i expect when i move my finger in front of the preheater nozzle. Should it become wet og damp from the kerosine? As it is now the jet smells of kerosine but when I mave my finger in front of the nozzle it dosn't become damp or wet from kerosine.

Kind regards
Rasmus

Hi there
Thank you for your surgesstions. Ended up disassembling the preheater. The problem was that the tube from the nozzle to the kerosine tank had come loose. Mounted it back on and now the preheater works like a charm!

Thank you for all your help

Rasmus