Café Improper Gas-Air Mixture at Burner

Gas surface burner flame is uneven, yellow, or noisy

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Dirty burner ports, incorrect orifice for gas type (LP vs natural), misadjusted air shutter, low gas pressure

How to Fix / Troubleshooting

Safety first: Turn off the burner and allow it to cool. If you smell gas, shut off the supply and ventilate the area.

  • Clean burner: Remove the burner cap and head. Clean all ports with warm soapy water and a soft brush. Dry thoroughly before reassembly.
  • Check cap placement: Ensure the burner cap is properly seated and not rocking.
  • Verify gas type: Confirm the range or cooktop has been converted correctly for your gas type (LP conversion kit installed if using propane). Incorrect orifices can cause yellow flames.
  • Adjust air shutter: Some Café burners have adjustable air shutters under the cooktop. Slightly open or close the shutter to achieve a steady blue flame.
  • Call gas professional: If flames remain yellow or noisy, have a qualified technician check gas pressure and orifice sizing.
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Repair Difficulty

Medium 3/5

Required Part

Surface Burner Orifice
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