Gas burner flame is yellow, sooty, or lifting off the burner ports.

Safety first: Yellow flames can produce soot and carbon monoxide. Ensure good ventilation and avoid prolonged use until corrected.

• Clean burner: Remove and clean burner heads and caps to ensure all ports are open.
• Check for drafts: Reduce strong drafts from windows or range hoods that may disturb the flame.
• Verify conversion: Confirm the range has been properly converted for LP or natural gas as applicable, including correct orifices and regulator setting.
• Inspect air shutters (advanced): Some burners have adjustable air shutters near the orifice. Adjust slightly to achieve a stable blue flame without lifting or yellow tips.

If flames remain yellow or sooty after cleaning and basic checks, have a qualified technician verify gas pressure and combustion settings.