Why Your Blackstone Has Yellow or Uneven Flames (Clogged Burner Fix)

Blackstone Yellow or Uneven Flame Fix

If your Blackstone griddle has large yellow/orange flames or uneven burners, the problem is usually a blockage inside the burner tubes.

Most of the time this blockage is spider webs. Cleaning the burners is simple and usually fixes the problem in just a few minutes.

Quick Overview of the Fix

Turn off the griddle and propane tank
Remove the griddle top
Locate the burner screws
Remove the screw holding the burner in place
Slide the burner out
Clean the inside of the burner tube with a pipe cleaner or burner brush
Reinstall the burner and test the flame

Video Showing the Fix

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Step-by-Step: Cleaning Blackstone Burner Tubes

Step 1: Turn Off the Griddle and Propane Tank

Start by turning all burner knobs to OFF and closing the propane tank valve.

This ensures no gas is flowing while you work on the burners.

Step 2: Remove the Griddle Top

Lift the griddle cooking surface off the frame so you can access the burners underneath.

Don’t worry if the underside looks a little rough from grease and heat. That’s normal and not part of the cooking surface.

a blackstone griddle witht he top being removed

Step 3: Locate the Burner Screws

On most Blackstone griddles, each burner is held in place by a single screw at the back.

This screw keeps the burner aligned with the gas valve.

Step 4: Remove the Burner Screw

Use a screwdriver to remove the screw holding the burner in place.

Set the screw aside so you don’t lose it.

a screw driver removing the burner froma blackstone griddle

Step 5: Slide the Burner Out

Carefully slide the burner upward and out.

You usually won’t be able to remove it completely because it’s connected to the igniter wire, but you can slide it out far enough to clean inside the burner tube.

Step 6: Clean the Burner Tube

Use a pipe cleaner, small bottle brush, or burner cleaning brush to clean inside the burner tube.

This removes spider webs and debris that block gas flow.

You can also lightly brush the outside of the burner to remove buildup around the burner holes.

cleaning a blackstone burner tube with a pipe cleaner

Step 7: Reinstall the Burner and Test the Flame

Slide the burner back into position and reinstall the screw.

Turn the propane tank back on, light the burners, and check the flame.

You should now see even blue flames across the burner.

A blackstone griddle witht he griddle top removed to see the flames. The flames are blue and lower than normal

If Your Flame Is Very Low Across All Burners

If your flame is low across every burner and the griddle won’t get hot, the issue may not be a blockage.

That usually means the propane regulator safety valve was triggered. Check out my full blog post on how to reset your regulator due on a Blackstone Griddle.

Looking for Something to Cook?

If your griddle is heating properly again and you need ideas, I put together a list of my Top 10 Blackstone Meals that are easy and great for beginners.