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Post by azmoda on Oct 22, 2023 17:07:46 GMT -5
On ignition, left front burner 'pops' out, then reignites repeatedly for 15-20 seconds until warmed up, then stays lit appropriately and flame can be adjusted appropriately. All three burners have recently developed a soft popping created by small amount of gas igniting at junction of burner unit and flash (ignition) tube. Burners appear to burn properly, adjust properly. Pilot light appears proper. Flash tubes appear to be in proper positions. Any thoughts, comments? Thanks from Arizona
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Post by mach12 on Oct 22, 2023 21:56:05 GMT -5
If you swap it with another in another location does the problem follow the burner? If so, the burner is the problem. Most of the time when I get a problem that moves around with the burner I find that it's gunked up from a boilover or something like that. Spraying it inside and out with BBQ grill cleaner and following the instructions for the cleaner should so the trick. Some have had good luck soaking it in white vinegar and then rinsing with hot water.
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Post by azmoda on Nov 6, 2023 18:57:59 GMT -5
Thanks for the tip mach12. I'll pull all three burners and give 'em a good clean as I don't think they've ever been cleaned and I've been around this stove for 70+ years. Will post results.
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Post by azmoda on Nov 11, 2023 11:52:42 GMT -5
Update: thoroughly cleaned the left front burner and, voilá, the aggressive on and off popping has stopped! Inspected the burner orifices before and after and did not notice any discernible difference, but am happy with the outcome. There is still some soft popping for a short while after burner ignition which appears to be small flash gas ignition coming from the junction of the flashtube and burner. This does not happen if burner is warm/hot
Thanks again, mach12, for your input regarding this issue.
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Post by mach12 on Nov 11, 2023 14:04:15 GMT -5
Thanks for the update - that's great news! And you're welcome. That popping at the end of the flash tube is pretty common and is normally a combination of air shutter adjustment and cleaning. What happens is that the mix of air and gas is off and won't ignite. The gas has to be between its lower explosive limit and upper explosive limit to ignite, so it sits there, occasionally getting the right mixture. Generally opening the air shutter a bit, then waiting before adjust more, will get rid of it. Sometimes you need to wait a full minute or longer for it to stabilize, so be patient. If it's too rich it could do a couple of more pops and flutters burning the excess gas sitting inside the burner, then will settle out. I generally adjust the burner by opening the air shutter just a bit at a time until the flame at the burner ports just start to go out at the very base of the flame (called "lifting"), then closing the shutter very slightly so that the flame is strong. Too lean and just moving a pan past it can blow it out but you want a clean and efficient burn, so it can take some tinkering to get it where you want it. I also use a welding tip cleaner to keep them clean. They're like little round files, so you don't want to be aggressive. Just lightly remove any food buildup. Not that I ever get distracted and boil stuff over. I'm thinking spraying rice water under my car would keep the undercarriage from ever rusting.
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