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How to Fix a Gas Grill

Save that beat-up old gas grill from the garbage dump and restore it to new condition for a fraction of the cost of a new grill. Virtually every part on the grill can be replaced, restored or repainted at relatively low cost, putting your grill back in use for many more seasons.

By the DIY experts of The Family Handyman Magazine

  • COST
  • CostCost $20 - $100
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    A new igniter assembly costs about $10; paint, oven cleaner and other materials may cost another $20. If needed, other parts usually cost more than $20.

How to Fix a Gas Grill

Save that beat-up old gas grill from the garbage dump and restore it to new condition for a fraction of the cost of a new grill. Virtually every part on the grill can be replaced, restored or repainted at relatively low cost, putting your grill back in use for many more seasons.

By the DIY experts of The Family Handyman Magazine

Step 1: Remove the cooking grate and rock grate

Renovating a grill involves three steps. You clean grease and grime off the grill. Repaint oxidized and faded parts with high-temp paint, and replace worn-out parts (get replacement parts at most home centers). Your grill may not look exactly like the one we show in the photos, but the components will be similar.

Start by removing the cooking grate, warming rack and lava rocks as shown in Photo 1. If the lava rocks are more than a year old or saturated with grease, replace them with new lava rocks or ceramic briquettes. The rock grate holds the lava rocks or briquettes above the burner. Under the rock grate there will be either a vapor bar or flame spreader, which protects the burner from dripping grease. Remove the rock grate and expose the burner as shown in Photo 2. The burner will be held in place with screws or retaining clips hooked into the venturi tubes.


Before doing any work, disconnect the gas supply or propane tank, and wear gloves to protect your hands from incredibly dirty grease stains.

Step 2: Test the igniter

Next, test the igniter electrode for a spark (Photo 3). When you push the igniter button, the electrode in the collector box sparks and ignites the gas. If the igniter wire sheathing has worn off, cover the exposed spots with electrical tape and retest. Most igniters fail because the spark never makes it to the electrode. If the igniter doesn't work, replace the entire igniter assembly. Photo 4 shows how to disconnect the igniter wire and remove the retaining clips from the venturi tubes, which carry gas from the control panel to the burners. Remove the igniter collector box from the burner (Photo 5) and the igniter button (Photo 6) from the control panel.

Step 3: Remove and clean the burner assembly

The burner assembly is the heart of the grill. Remove and clean it as shown in Photos 7 – 9. If the burner or venturi tubes have excessive rust and the burner holes are rusted through, replace the burner assembly. These assemblies can be expensive.

Step 4: Scrub the grill body

Once you pull out all the parts, remove grease buildup from the body (Photo 10). Remove stubborn grease film with an oven or grill cleaner (Photo 11). Clean the viewing glass with a glass cleaner. Dislodge buildup from the cooking grate with a wire brush or the special grill cleaning brush shown in Photo 12.

Degrease the entire grill

Sand and wire brush

Degrease and Sand Before Painting

Spread degreaser inside the cover and burner area and over the entire exterior. Then scrub the entire grill with a brush. Make sure you remove grease from all the crevices. If you have a power washer, soak the grill with degreaser and then blast off the grease and loose paint. Rinse it with water and let it dry in the sun.

Sand pitted and corroded areas with 80-grit sandpaper. Use a wire brush in the crevices to remove surface rust and chipping paint. Then switch to 120-grit sandpaper and sand the entire grill and cart.

Step 5: Restore the wood slats

Scrub down the wooden slats with sandpaper, and recoat them with a matching stain (Photo 13).

Paint the grill

After sanding, wipe the entire grill with a tack cloth. Pretreat the worst rust spots with a rust converter product. Once that dries, prime the rusty areas and bare metal with a primer for rusty metal. Let the primer dry. Then spray-paint it. Let the paint dry for the recommended time. Then install the burners and grates and any replacement parts and get grilling.

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Required Tools for this Project

Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.

    • 4-in-1 screwdriver
    • Needle-nose pliers
    • Orbital sander

Plastic scraper, gloves, rubber gloves, Venturi tube cleaning brush, mirror

Required Materials for this Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.

    • Small finish nail
    • Oven cleaner
    • High temperature paint
    • Sandpaper, 80 and 120 grit
    • Wood stain and finish
    • Rust converter
    • Metal primer
    • N95 dust mask

Comments from DIY Community Members

Share what's on your mind and see what other DIYers are thinking about.

1 - 9 of 9 comments
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March 25, 7:34 AM [GMT -5]

Thanks for the helpful advice Family Handyman.

August 19, 9:40 AM [GMT -5]

@Rocket255: Regarding peeling paint on inside of BBQ: it might not actually be paint that's pealing. Double-check your model, but I discovered with mine that the inside actually isn't painted at all, and that the black stuff was all grease. It can be scraped off.

June 03, 7:44 AM [GMT -5]

Peeling paint on the underside (inside) of the hood. Anyone? Anyone? Bueller?

June 03, 7:41 AM [GMT -5]

This is the second gas grill that I've owned and the second time that after a few years the paint on the underside of the hood (inside) peels and flakes off. Scraping with a putty knife and repainting is a temporary fix. With lots of little kids around, sharp little flecks of paint on the burgers are not very appetizing. Any ideas on a better scraping/cleaning method and what kind of paint to use?

September 22, 11:52 AM [GMT -5]

I'm looking for a tip on reinforcing the bottom of a Charbroil type gas grill, It has like a sheet of metal on the back andstarted to rust so that it's losing stability on the bottom where the wheels are. I'm thinking of riveting a piece of sheet metal onto the back-bottom of it. Anyone have any suggestions?

July 04, 2:16 PM [GMT -5]

I do not need to do this at this time. But for some reason I think that you should explain to some people that Linseed oil is a very volatile substance and may catch fire don't you?


June 20, 10:55 AM [GMT -5]

I just replaced a few things on my grill that were getting old (got stuff @ this site, they had just what I needed http://www.ereplacementparts.com/grill-parts.html) and I haven't had a chance to deep clean it yet but I am definitely going to use these steps to get it done! I didn't even think about refinishing the wood, so I'm going to do that and make it look like new again. Thanks!

April 06, 12:56 PM [GMT -5]

cleaning out the grill funk and changing the burner are all u need to do. Don't waste money or the time changing the igniter its cheaper to use the candle lighter.

June 22, 6:41 AM [GMT -5]

I did this on a 5 year old gas grill and it was simple just follow the detailed directions given and don't skip any. My grill now looks new and grills to perfection!

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