Pulsating silent burner

Hello,

Today I fired up my Primus 54. It had been unused for some time.
It started burning with a nice blue flame, but after a few minutes the flame went high and orange for a few seconds. And than back to normal. This way of burning went on repeatedly.
Any ideas of what can be the cause?
Help much appreciated!

Klaas

 

Is it possible water could have got into the tank, by condensation or other means?

 

Now that I think about it: it could be.
Can a very small amount of water (e.g. 1%) cause this problem?
I cleaned the kero-canister . . .

 

Yes, water droplets in the supply of steam can momentarily interrupt cobustion, the steam causes the flare. Too much water can put the stove out completely.

 

Ok. Thank you! Learning every day!