Why Are Your Gas Grill Burners Burning Yellow?

what causes yellow flames on a gas grill?

What Color Should A Gas Grill’s Flames Be?

Your gas grill’s flames should be blue. The tips of the blue flames can be slightly yellow, but if your grill’s burners are burning yellow, something is wrong.

Reasons Why Your Gas Grill’s Burners Are Burning Yellow

The most common cause of burner flames burning yellow is low gas pressure from the regulator, which is an easy fix you can do at home.

A yellow flame can also be caused by an incorrect mixture of gas and air. You can typically fix this by adjusting the burner’s air intake shutters.

How To Prevent Your Grill Burners From Burning Yellow In The Future

Prevention is key! Check out these tips that could help to prevent your grill burners from burning yellow.

How To Reset A Regulator If Your Gas Grill’s Flames Are Burning Yellow

How To Reset Your Regulator

Step 1: Turn your propane tank off and disconnect it from your grill’s gas line.

propane tank disconnect from the gas grill

Step 2: Turn your grill’s main burner knobs to the OFF position and wait for about 30 seconds.

gas grill control panel

Step 3: Reconnect the fuel tank and slowly open the propane tank’s valve.

propane tank valve

Step 4: Light your grill as per your instruction manual to see if the flames are still burning yellow.

If your gas grill burners’ flames are still burning yellow, check the control valves and burner tubes for obstruction and alignment to ensure that gas flow is consistent.

How To Replace Your Regulator

In the case that you need to replace your regulator, all you’ll need is your replacement part regulator and two adjustable wrenches. Then follow these step-by-step instructions:

gas grill regulator

  1. Turn all burner control knobs to the OFF position.
  2. Turn the propane tank gas valve clockwise to the OFF position.
  3. Remove the gas grill regulator’s coupling nut from the propane tank by turning the coupling nut counter-clockwise.
  4. Remove the propane tank from the grill.
  5. Locate the opposite end of the gas grill's regulator hose where the brass fitting connects to the manifold.
  6. Using an adjustable wrench, disconnect the brass fitting by turning it counter-clockwise. Secure the manifold using another wrench while disconnecting the brass fitting.
  7. Dispose of the old regulator and gas hose.
  8. Attach the gas grill regulator replacement gas hose by turning the brass fitting clockwise onto the manifold, until it is hand-tight.
  9. Using the two wrenches, tighten the brass fitting onto the manifold. Do not over-tighten the connection.
  10. Place the propane tank into the opening in the propane tank compartment and re-attach the gas grill regulator coupling nut to the propane tank by turning it clockwise.
  11. Perform the Soapy Leak Test to confirm you have a fully sealed, leak-free, propane gas tank and regulator.
  12. Once you’ve confirmed there are no leaks, ignite the burners following the instructions in your grill’s Owner’s Manual.

hand pressing ignition started button on a gas grill

It’s essential that you purchase a suitable gas grill regulator replacement part for your grill model.

Do you need to replace your gas grill regulator? Search for all your gas grill component replacements here.

How To Adjust The Air Shutters On Your Gas Grill Burners If The Flames Are Burning Yellow

As always, consult your Owner’s Manual to easily locate any part of your grill, including the air shutters, for replacement.

Adjusting the burner intake is one of the easiest ways to improve your gas grill’s efficiency. An air adjustment shutter at the burner’s base allows you to adjust the amount of air mixed with gas.

Too little air, and you’ll get a low yellow flame. If the flame looks like it’s floating above the burner, there is too much air coming through.

The correct amount of air should give you consistent, approximately 1-inch blue flames with a yellow tip across the entire burner, and the flames should touch the burner.

The air adjustment shutter can be found at the bottom of the burner. Or on venturi tubes, it can be located at the base of the tubes.

Adjust Your Grill’s Air Shutters By Following These Steps:

Step 1: Locate the set screw by the metal shutter at the end of the burner.

Step 2: Loosen the screw to allow the shutter to slide open or closed.  Leave it half open for propane gas, or a quarter of the way open if you’re using natural gas.

Step 3: Ignite the grill to see if the burner flames are blue with yellow tips.

Step 4: Once the flames are burning blue, tighten the screw to keep the shutter in place.

How To Clean Your Gas Grill’s Burners

If there are spots without flames along your burner, then you probably have a clogged burner. Check your burners for clogged holes. You can use a straightened paper clip to unblock them.

Step 1: Check your manual for instructions on how to remove your burners correctly. Once the burners are taken off, you’re ready to clean your grill.

Step 2: Use a burner cleaning rod or a small-diameter bottle brush to clean out debris inside the burner tube.

Step 3: Scrub the burners with a nylon brush on the outside of the burner to remove food debris and dirt.

Step 4: Check your manual for instructions on how to reattach your burners correctly.

Note that you should clean your grill’s burners thoroughly about once a month.

Do you need to replace your gas grill’s burners? Search for grill burner replacement parts here.

Common Causes Of Dirty Grates & Burners On A Gas Grill

Every time you use your grill - food particles, oil, marinade, sauces, fat and grease are left on the grill. They can also drip down onto your flame tamers and burners.

It’s advisable to clean your grill after every use, once it’s cooled down.

The Importance Of Cleaning Your Gas Grill Before Every Use

  • Regular cleaning gives you a chance to make sure that your gas grill is working properly.
  • If you don’t empty and clean it often, the grease catcher on your grill could easily overflow. Not only is this a fire hazard, it can also stain the concrete your grill is standing on.
  • If you don't clean your grill, you expose fresh foods to old food particles and residue. The leftover grease, fat, and pieces of meat will burn, changing the taste of your food.
  • When old meat and fat is burnt into charcoal in your grill, the smoke taints your food with cancer-causing carcinogens.
  • Leftover, accumulated grease is an ideal breeding ground for mold. Yuck!
  • If you don’t use your grill for a while and there are leftover bits of meat and grease attached to it, it will attract critters like rats and mice that will make their home in your grill.

Finding the Right Gas Grill Replacement Parts

My Grill Parts is the go-to supplier for quality gas grill replacement parts.

We’ll make sure that you can grill safely and conveniently year-round. You can search for your replacement grill parts by brand using our website. You can also find what you need by entering your grill’s model number.

If you don’t see the grill replacement part you’re looking for on mygrillparts.com, please feel free to contact us.

We’re more than happy to assist – and get you back to grilling in no time!

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