Grates and sticking
Sticking that gets worse each week is often residue plus worn seasoning, not only heat. Brush, wipe, then preheat long enough for the surface to dry before oiling food instead of flooding grates.
After cooking, while the grill is still readable
Warm metal and fresh residue show where heat and grease traveled.
Once food is off and fuel is shut down safely, brush grates while warm enough to release protein but cool enough to work with control. Look for carbon islands that always form in the same spot; they mark hot zones and drip patterns. On gas grills, inspect flame tamers or bars for greasy channels that feed flare ups. On charcoal grills, knock ash loose only after coals are fully dead or contained according to local rules, then check that lower vents are not sealed by powder. Leave cast iron lightly oiled, stainless brushed along the grain, and porcelain free of metal gouges that invite rust.
Grease path
Follow drips from bars to tray to cup. A clogged corner can send grease back toward burners, where smoke smells sharp and flare ups return even after food is moved.
Monthly and seasonal maintenance with a purpose
Deeper work should solve a named problem, not create a ritual.
If startup has slowed, remove and inspect gas burners for ports clogged by corrosion, insects or expanded metal, using manufacturer guidance for safe disassembly. If smoke tastes acrid, scrape interior lid flakes and empty grease systems rather than masking odor with heavy cleaner. For charcoal, clear the ash catcher, verify grate warping has not blocked airflow, and replace rusted dampers that no longer hold settings. Before storage, disconnect propane as directed, keep tanks upright outdoors, and never move a grill with hot coals into a garage or near siding. Maintenance ends when ignition is predictable, flames are even, grease drains, and no fuel odor remains.
Burner inspection
Remove only parts the manual identifies as user serviceable. Check port pattern, crossover ignition and tube alignment; stop if fasteners are seized, hoses look cracked or gas fittings need force.
Ash and airflow
Deep ash changes draft and can insulate vents shut. Dispose of cooled coals in a metal container, keep water nearby, and confirm no ember remains before storage or trash placement.