Weber · Spirit Grills
If the flames do not extend consistently across the entire length of the burner tube, it indicates that some burner ports may be blocked or dirty.
Click steps to track your progress.
Clean burner ports that run down the entire length of the burner tube. Refer to the 'CLEANING THE BURNER TUBE PORTS' section.
Inspect spider/insect screens for possible obstructions and clean them.
Ensure no debris is obstructing gas flow to the burner tubes.