Which Grill Parts Wear Out First, and How to Identify Yours

Your grill was fine in May. Now one side runs hot, the other barely lights, and the burgers are cooking in two different time zones.

Nine times out of ten this is one of four parts, and you do not need a technician to work out which. The symptom tells you. What stops most people is not the repair, it is knowing what the broken thing is called, because you cannot search for a part you cannot name.

Here is how to identify yours.

First, find your model number

Do this before anything else. Grill parts are model-specific and often year-specific, so "36 inch built-in" is not enough to order from. The same brand will change a burner design mid-production and the old part will not sit right.

Where to look:

• Built-in heads: on the underside of the control panel, or on the inside face of the front bezel. You may need to open the hood and look up.
• Cart and freestanding grills: on the inside of one of the cabinet doors, on the back panel, or on the underside of the shelf.
• Older units: sometimes only on the original paperwork. If the tag is gone, photograph the burner and the ignition assembly from several angles. That is usually enough for us to identify it.

Write it down somewhere that is not the grill. Tags fade.

Symptom to part: the quick diagnosis

What you are seeing	The part that has almost certainly failed
Uneven flame, dead spots along one burner, visible rust holes	Burner
Food sticking badly, flaking black bits, deep pitting	Cooking grates
Clicks but will not light, or no click at all	Igniter, electrode or battery
All burners low, weak flame everywhere, no single bad zone	Regulator or gas valve
Constant flare-ups, grease fires, uneven heat above a good burner	Heat plates or flavorizer bars

If more than one row matches, start with the cheapest part on the list. It is usually the answer.

The four parts, in the order they fail

Burners

Burners take the most direct heat and the most grease, so they go first. Stainless tube burners usually give you three to five years of regular use. Heavy cast stainless goes a good deal longer. Coastal air shortens all of it.

Look for rust holes, cracked seams, or ports that stay dark when the burner is lit. A burner that lights unevenly after a good brushing is a burner that is finished. Do not try to drill out blocked ports on a rusted burner, you will open the seam.

Cooking grates

Grates fail slowly enough that people stop noticing. Cast iron grates that have lost their coating will stick and rust. Stainless rod grates pit and thin out until they flex under a full load.

The test: run a paper towel across a cold, clean grate. If it snags, the surface is gone.

Igniters and electrodes

The most commonly replaced part on any gas grill, and the most commonly misdiagnosed. Before you buy anything:

1. Change the battery. On a push-button igniter this fixes it more often than anything else.
2. Check that the electrode tip is clean and dry, and that it sits roughly an eighth of an inch from the burner.
3. Look at the wire. Rodents chew them. A visible break is your answer.

If you get a strong click and no light, the igniter is fine and the gas is not reaching the electrode, which usually points back at the burner.

Regulators and valves

If every burner is weak at once, suspect the regulator before you suspect five separate burners. On propane grills, the regulator's safety device can trip if the tank valve was opened too fast with the burner valves already on. Turn everything off, disconnect, wait a minute, reconnect with the burner valves closed, and open the tank slowly.

If that does not fix it, the regulator or a gas valve needs replacing. Valves are the one item on this page we would not call a beginner job.

OEM or universal?

Universal parts are a real saving on some items and a false economy on others.

Universal is usually fine for: cooking grates, heat plates, and grease trays, where the dimension is the only thing that matters.

Go OEM for: valves, regulators, igniter modules, and anything the manufacturer treats as a gas-carrying component. The tolerances matter and so does your warranty.

Burners sit in between, and they deserve their own article, which is coming in a few weeks.

When it is worth calling someone

Some of this is a twenty-minute job with a screwdriver. Some of it is not.

If you are in the greater Washington DC area, our sister service BBQ Rescue handles grill cleaning, minor repair, grill assembly, monthly maintenance, Big Green Egg gasket replacement, and diagnostic check-ups. They are a certified specialist for Napoleon, Big Green Egg and Weber.

Their service area covers Washington DC plus Alexandria, Annapolis, Ashburn, Baltimore, Bethesda, Bowie, Crofton, Fairfax, Gaithersburg, Germantown, Glen Burnie, Laurel, Leesburg, Odenton, Olney, Potomac, Rockville, Severna Park, Silver Spring, Springfield, Towson, Tysons Corner, Upper Marlboro and Vienna, among others. If you are outside that area, the diagnosis above still holds and we can still get you the part.

BBQ Rescue: 301-543-9336, weekdays 8:00 am to 5:00 pm and Saturday 9:00 am to 5:00 pm.

Frequently asked questions

How long should grill burners last?
Three to five years is typical for stainless tube burners in regular use, and often longer for heavy cast stainless. Covering the grill and clearing grease after cooks makes more difference than the brand does.

Should I replace one burner or all of them?
If one burner has rusted through and the others are the same age, replace them together. Mismatched burners give you uneven heat across the grate, which is the problem you were trying to solve.

Is my grill worth repairing, or should I replace it?
A rough guide: if the parts cost more than about a third of a comparable new grill, and the firebox itself is rusting through, replacement is the better buy. A sound firebox is worth putting parts into almost every time. Good built-in heads are routinely worth rebuilding at ten years old.

Do you carry parts for discontinued models?
Often, yes. Send us the model number, or photographs if the tag is gone, and we will tell you honestly whether it is still available.

Will a universal part void my warranty?
On a grill still under warranty, use OEM. It is not worth the argument later.

Getting the right part

Once you know what failed, browse grill replacement parts, or go straight to your brand: Weber, Bull, AOG or Blaze.

While you are there, a grill cover is the cheapest part on this page, because most of what fails above fails faster when it sits uncovered through a wet winter.

Not sure what you are looking at? Call us on 1 (866) 850-3450 with the model number, or the photographs, and we will work it out with you.