Question about Lynx LBQ27FRE (NG)

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There is only enough gas to lite one side and the burner flames stay very low even when turned on high

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  • jdadamss Mar 19, 2011

    THIS IS NOT A PROPANE GRILL ITS NATURAL GAS AND ALL THE VALVES ARE OPEN . ITWORK FINE LAST TIME I USED IT

  • jdadamss Mar 19, 2011

    THIS IS A NATURAL GAS GRILL .LAST TIME I USED IT IT WORKED FINE . NOW THE GAS PRESSURE IS SO LOW IT BARELY LITES ONE SIDE AND THE FLAMES WILL NOT INCREASE WHEN KNOB IS TURNED TO HIGH

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  • 1,536 Answers

Aside from the usual suspects (low fuel tank pressure, mis-adjusted, clogged or malfunctioning regulator), there are gas flow limiting devices that are activated by excess heat, improper lighting, or a detected leak in the regulator or downstream.

  1. Inspect the gas plumbing between the tank and burner. Replace any hoses or other parts that show visible flaws. Remove any char build-up inside the burners and gas pipes feeding them.
  2. If you have a clean, empty spray bottle handy, fill it with a mixture of soap and water. Open the tank valve, then spray the connections. If you see soap bubbles popping up from some point, you have a leak there. Tighten the loose connection or replace the fitting as necessary.
  3. If flow is being limited because of a lighting procedure problem, shut off all burner controls and close the gas valve. Wait 30 seconds. Open the gas valve slowly. Wait 5 seconds, then open the burner valve and light it.
  4. The large black coupling is thermally sensitive. If it is heated above 240 ° F, it is supposed to shut off gas flow - permanently. If this shutoff has been tripped (even partially), the coupler must be replaced.
Note: there are two different regulators. If you must replace the regulator, make sure you get the one for the fuel you use (natural gas or propane).

References: Owner's manual
Parts diagram

Posted on Mar 19, 2011

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  • Master
  • 4,736 Answers

If this is a Propane gas Grill with a tank ... Turn the tank vale OFF. Disconnect the grill hose from the tank and wait 5 minutes before reconnecting it. After reconnecting the hose to the tank, turn the tank valve on VERY, VERY, SLOWLY (Slow motion, slow). Once the vale is completely open, light the burner farthest from the tank first and turn the burner to the highest setting. If the flame height appears normal repeat this procedure with the remaining burners. If the flame heights do not appear normal, turn the tank valve OFF and disconnect the hose. Remove the tank from the grill and lift it with one hand. Does it feel full or partially full? If not, and it's not a new tank, it may only have enough gas to barely light the burners. If the tank is full or partially full and the first procedure listed above didn't solve the problem, you need to replace the grill hose and regulator assembly. You can purchase one from just about any hardware or home improvement store that sells gas grills. Just take you old one with you for comparison. Remember, always turn the tank valve on VERY, VERY Slowly.

Happy Grilling!!

Posted on Mar 19, 2011

  • 1 more comment 
  • Rich Landrum Mar 20, 2011

    Check the inline gas shutoff valve to make sure it's completely ON. If it's been a while Several months) since you've used the grill, the venturi valves may be clogged with insect nests. You will need to remove the burners from the grill to inspect the valve (They are the open end of the burner) and while you're at it, check the burner orifices to be sure they are not clogged. Once the burners are out, your will be able to see the orifices. To clean them, unscrew them with the appropriately sized open end wrench and blow air through them.

    This would be really unusual, but do you have a regulator on your Natural Gas Grill? I said unusual, because most Natural Gas Grills Don't. But if you do, it may be locked closed. In which case it will need to be replaced.

  • Rich Landrum Mar 20, 2011

    Check the inline gas shutoff valve to make sure it's completely ON. If it's been a while Several months) since you've used the grill, the venturi valves may be clogged with insect nests. You will need to remove the burners from the grill to inspect the valve (They are the open end of the burner) and while you're at it, check the burner orifices to be sure they are not clogged. Once the burners are out, your will be able to see the orifices. To clean them, unscrew them with the appropriately sized open end wrench and blow air through them.

    This would be really unusual, but do you have a regulator on your Natural Gas Grill? I said unusual, because most Natural Gas Grills Don't. But if you do, it may be locked closed. In which case it will need to be replaced.

  • Rich Landrum Mar 20, 2011

    Check the inline gas shutoff valve to make sure it's completely ON. If it's been a while Several months) since you've used the grill, the venturi valves may be clogged with insect nests. You will need to remove the burners from the grill to inspect the valve (They are the open end of the burner) and while you're at it, check the burner orifices to be sure they are not clogged. Once the burners are out, your will be able to see the orifices. To clean them, unscrew them with the appropriately sized open end wrench and blow air through them.

    This would be really unusual, but do you have a regulator on your Natural Gas Grill? I said unusual, because most Natural Gas Grills Don't. But if you do, it may be locked closed. In which case it will need to be replaced.

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