The color of flames on your burner can indicate whether the grill is functioning correctly.
If the burners are functioning properly, there'll be a special flame pattern. The bottom of the flame is dark blue, and next is light blue, while the tips occasionally flicker yellow.
If the flames don't have a uniform appearance on the burner or have large yellow flames, something is wrong. Yellow flames can indicate an adjustment problem or failed components. This problem can lead to uneven heat, low heat, bad grilling, and soot build-up on foods.
Check Whether the Regulator Is Stuck
If the regulator gets stuck, it can lead to low gas pressure, and your grill won't get hot. To fix this problem:
- Turn off the propane gas tank.
- Disconnect tank from the gas line.
- Turn the control valves high.
- Wait for one minute.
- Turn off your control valves.
- Reconnect and slowly turn on your gas.
- Light the grill.
Adjust the Burner
A wrong mixture of air and gas can cause yellow flames. You can fix this by adjusting the air intake of the burner. At the adjustment point where the grill manifold connects to the burner, you'll find an adjustment screw. Loosen the adjustment screw and rotate the metal sleeve. Then, tighten the adjustment screw and fire up your grill. The flame should settle in after a minute. If the flame is still yellow, keep repeating the process until only the tip is yellow.
Clean the Burners
If the yellow flame problem persists, there may be burnt-on food on the burner or debris inside it.
You might need to replace the burners if they're rusted or damaged. You might need to remove the burners and gently clean the inside. Doing this can be complicated or simple, depending on the grill design. After cleaning, light your grill and the flame should be normal again.