How to Troubleshoot a Low Flame Output on Your Barbecue Grill


When food on the grill doesn't cook quickly, your reputation as grill master is at stake. Low flames are a major indicator of a low temperature and grill problems. You might have a gas leak that needs to be addressed for safety reasons, or someone might have improperly shut down or started your grill. Troubleshoot the grill until you get higher flames.

Things You'll Need

  • Bowl
  • Liquid dish soap
  • Rag
  • Propane tank
  • Try relighting the grill in case something went wrong. First, turn off the grill valves and then turn off the propane tank completely. Second, reopen the valve on the propane tank, turning the valve slowly so pressure can equalize. Third, turn on the grill valves. If you started the grill improperly, this can affect flame output.

  • Allow your grill to heat up with the grill valves on high for 10 to 15 minutes. At this time, turn down the heat. If you noticed a low flame output with the grill on high, this could increase the flame output at high volume.

  • Reset the regulator to solve one common problem that leads to low flame output. To do so, turn off the grill valves and close the tank valve to turn off the gas. Unscrew the hose from the propane tank. Open the lid on the grill, and turn the grill valves to high to allow gas to escape. Let the valves bleed for two minutes. Close the grill valves. Reconnect the hose to the propane tank. Slowly open the tank valve to start gas flow, then turn the grill valves. If this doesn't work, repeat the process from start to finish.

  • Check the hose for leaks if you still experience low flame. Turn off all grill valves and disconnect the hose from the tank. Prepare a small bowl of soapy water. Sponge the hose with soapy water and look for bubbles, which indicate a gas leak. If you see bubbles, replace or repair the hose to solve your grill problem.

Tips & Warnings

  • Turning off the grill valves before turning off the gas prevents regulator problems.
  • An empty tank or a bad tank will cause low flame output. If you have a spare tank, test your grill with that to see whether the propane is to blame.

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  • Photo Credit Hemera Technologies/ Images
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