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Hi Carl- having the same identical problem with mine. I've contacted Jay re a fix. I'll pull the poker on mine tonight and have a look- if I understand correctly, the poker's not at ninety degrees to the mounting collar (?). If that's the case, it may be easy to true it up on a lathe, if you have access. Will await Jay's reply though, before proceeding.
 
Let us know. I did the same last night- my burner was out of line too, although not as much as yours. Going to re-install later today, curious how yours goes. Also like to know how the mesh works out- I may as well do that too while it's apart.
 
I always bleed off some gas at the beginning of a run, just by force of habit. The issue with mine (and perhaps some others) is that the 'spitting' is happening later in the firing cycle, not after filling. Thus, heat may be the suspect? I will add, my tank does appear to be insulated.
 
Hi,

The "coughing"/unstable flame later in the run problem is heat. If you look at the right water tank where the gas tank is located, you can see the problem.

The gas tank is totally enclosed next to the boiler and smokebox. Look at your other locomotives, the gas tank can get very warm, but it usually is at the back of the locomotive. It usually has some exposed surfaces to the air. This one has none AND the gas tank goes to the front of the tank right next to the smoke box, the hottest part of our locomotives.

I will stuff some insulation between the smokebox and the right water tank/inside gas tank. Hopefully, this will stop the gas from overheating.

Lots of people are speculating about the problem, but this is not one of the "round up the usual suspects" problems we have with gas fired engines.

I will let you know with the insulation experiment.

Dan
My thoughts exactly. The front plate that is contiguous with the smokebox may also be transferring a lot of heat as well. Q- were you able to get the tank 'top' off, and how did you do that?
 
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