Gas burner ignites but flame is weak, yellow, or uneven on Fagor gas cooktop.

Safety first: Turn off the burner and allow it to cool. Shut off gas supply if removing injectors.

• Clean burner: Remove the burner cap and head. Soak in warm soapy water, scrub gently, and dry completely.
• Clear ports: Use a soft brush or wooden toothpick to clean each port. Avoid metal tools that can damage the burner.
• Check cap alignment: Refit the burner head and cap, ensuring they sit flat and centered.
• Verify gas type: Confirm the cooktop is configured for your gas type (natural gas or LPG). Using the wrong injectors can cause yellow flames.
• Professional adjustment: If flames remain yellow or noisy, have a technician check gas pressure and adjust air shutters or replace injectors as needed.