I am running into an issue which I am not sure even is an issue but its irregular.
I have 2 of the MSA 72 Vulcan griddles, they are just regular mechanical gas valves, no electronics at all.
I have seen it 2 or 3 times now where I can see a bit of a flame coming out of the flue, once it was really bad and you could almost do marshmallows on them but last night it was just in the right hand side of the flue, it was sticking up maybe 1/2" to 1".
Last time it happened, I changed the vent limiter in the gas valve thinking it might be some type of gas problem, I then checked gas pressure and it was normal, I have looked at everything and it looks fine, heats up fine but I find it a bit unsettling that the exhaust has even a tiny bit of flame coming out.
Anybody got any ideas?