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Dienstag, 13. Februar 2007, 17:15

Loss of pression ?

Another basic question, sorry guys...

With the tank approximately 2/3 full, starting with 2 bars I'm at 0 in only 10 minutes, is that normal ? Am I supposed to pump every 10 minutes ?

As I understand it, it is better to use the lamp with very few kerosene if you don't want to pump all night, is that correct ?

Thks, later...


Ps: BTW, how do you know how much kerosene is left in the tank ?



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Dienstag, 13. Februar 2007, 19:51

RE: Loss of pression ?


Original von aguye
Ps: BTW, how do you know how much kerosene is left in the tank ?

Hi Anthony
when the light swithes off the tank is empty! Always remember that!

Did you check your lamp with air in the tank under water?
Gruß vom Largo aus dem südlichen Süden

**** et lux perpetua luceat eis ****


Mittwoch, 14. Februar 2007, 08:55

It dose sound that you have a air leak somewhere.
I will do what el_largo suggested and pressure test the lantern underwater
(not lighted of-course ;) )
2/3 of a tank should hold at least 6hr
When all else fails! Read the instructions ;)
International Fuel Names

Dieser Beitrag wurde bereits 1 mal editiert, zuletzt von »Doron Papo« (14. Februar 2007, 08:55)


Donnerstag, 15. Februar 2007, 14:59


When I put pressure in the lamp, without lighting it, it's empty in 1/2 hour :(

I have done what you suggested and here's what I found out...

When the lamp was underwater, there were some bubbles coming out of the pump. However, I think it may simply be that some air was going in the first part of the pump, not in the tank itself...

When the lamp was out of the water, it made a hissing noise. I tried to find where it was coming from and it was... the preheater ! There were also some soap bubble coming out from there.

I think that the preheater does not close tightly... What can I do ?? Do I have to replace it entirely ?

Thanks for your help !



Donnerstag, 15. Februar 2007, 15:35

Hi Anthony
No need to replace the whole pre-heater, just the pre-heater gasket.

This is the rubber gasket in part #229 that closes the pre-heater nipple.
Nitrile Rubber is the best for that.
When all else fails! Read the instructions ;)
International Fuel Names


Donnerstag, 15. Februar 2007, 17:50

Just ordered the part, thank you very much for your help !!


Donnerstag, 15. Februar 2007, 18:08

looking for some pictures when the lantern is fully operational :)
When all else fails! Read the instructions ;)
International Fuel Names



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Freitag, 16. Februar 2007, 04:32

Hi Anthony,
if the preheater is leaking at the rubber gasket it could be possible to turn the rubber part. Loose the screw and and take the rubber part carefully out. Turn it and press it into the brass item. I have done this often, in 90% it works.
After a long time the rubber part is defomed and closes not as it should. If the deformed side is to big, it will not fit in the brass part, you can cut of a little from the diameter till it fits. Maybe you have to use pliers to press the rubber part in the brass item.


Dienstag, 20. Februar 2007, 10:03

It worked, thanks a lot Jan !!! :applaudit:

For the first time yesterday, I could really use my Petromax... 2 hours perfect light without having to pump after ignition :)

I don't regret to have ordered the spare part though, because I have seen that one side of the rubber part is completely burnt and the metalic part is also damaged...

Thanks again,



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