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Smoke Coming Out Of Oven While Preheating

An oven is an essential kitchen appliance while preheating is a standard part of cooking. It is good to warm your oven up before you begin your meal preparation. But it may be distressing that smoke may come out during this stage.

Smoke affects the taste and quality of food. For starters, smoke emanating from any electronic appliance is alarming and should be taken seriously. Worse, a smoking oven doesn’t just smell bad but may cause harm to your health.

Have you noticed your oven emits smoke when you preheat it? Regardless of the type of oven you have, whether electronic or gas, new or old, with food inside or without, smoke would result from several issues. 

Therefore, it needs to be fixed immediately. In this write-down, we will tell you the reasons your oven is smoking and how you can fix it.

Smoke Coming Out Of Oven While Preheating: Reasons Why

The Stove is New

The oven may emit smoke in the operational setting, like preheating if the stove is new. However, it is not because the appliance is faulty but rather the burning off of the oil-based coatings of the heating element that is inside the stove. 


Before using the oven for the first time, manufacturers recommend that your stove should “burn in” (burn the factory coating) before using it to prepare any food. 

The procedure to burn in your oven is pretty simple. Turn it off if it is on and let it cool entirely, then take out any pots and pans from the oven racks. Next, close the oven and set it to bake at recommended temperatures (400-600 degrees Fahrenheit) for ½ – to an hour.

 Food Remains

In used ovens, the leading cause of the smoke is the presence of leftover foods inside the stove. Foods with high fat like steaks or baked foods like pizzas without a baking sheet lead to grease splattering on the roof and sidewalls of the device while food debris is on its floor.

When you neglect cleaning the residues while still wet, they harden. On your subsequent use of the stove, they burn, emitting smoke but rarely do they catch fire.


Ensure you turn off the oven and let it cool off completely, after which you open the oven door and remove the food chunks from its floor using plastic tongs. Alternatively, manually clean the appliance using natural remedies such as water, vinegar, and baking water in your pantries.

Leftover Oven Cleaner Substance

Cleaning your appliance is excellent, but sometimes you may see smoke coming out. It probably results from cleaner remains, and because chemical-laden fumes accompany the smoke, they sniff very quickly.


Turn the oven off and let it cool completely. Using a wet rag, wipe up any cleaner leftover or spills on the inside of the oven. If the stove is self–cleaning, never use any commercial solvent cleaner as it ruins the oven’s enamel lining.

Faulty Heating Elements

The primary function of the heating elements is to heat the oven. They are known to buzz and release smoke before malfunctioning shortly. Even though during a self-cleaning cycle, smoke emanates, it may also be a sign of an underlying issue of excess heating up in the heating elements.

You can check if they still operate by turning off the oven and then turning it back on. If the bake element at the bottom of the stove fails to glow red while the cookstove is in “bake mode” or the broil element at the top of the oven when in “brail mode,” then you can consider a replacement.


Replacement can be DIY or consult a professional. First, cut the power supply to the oven, unplug it, and then remove the screws along with the wires connecting the element to the stove.

Follow by detaching the nonfunctional element from the bottom or top; once you have the new part, install it. 

Lastly, reattach the wires and screws before you turn on the oven.

Gas Pressure

In case you own a gas oven, high gas pressure is an outcome of improper conversion of the stove from natural gas that the device was initially designed for use to the liquid propane fuel type.

Higher pressure generates taller and hotter oven flames from the primary burner at the base of the oven, resulting in high volumes of smoke.

You will detect the gas pressure being too high if the flame from the main burner is at or exceeds the oven racks’ height, with greater chances of an oven fire outburst. It is wise to consult an expert or your company to rectify the conversion.

 Pyrolytic Self-Clean Cycles

Smoke that emanates from your oven during self-cleaning cycles is due to food being incinerated under the excess cycle heat. 


To minimize the volume of smoke produced by leftovers during self-clean cycles, turn off the oven and let it cool entirely. Then using a damp rag, wipe the wet food remains from the inner parts of the range.

Then does a restart self-clean cycle at a reduced duration of time to prevent excess heat from building up in the oven.

However, note that the self-clean mode is used with much discretion. If your oven lacks the feature, you can clean it manually.

Hacks on How to Keep Smoke at Bay

Avoid spills inside the oven by placing food in baking or broiling pans before cooking them. Also, avoid direct placement of food on the oven racks.

Lay a fireproof, non-stick mat beneath the rack for multi-tier ovens to catch the food debris and drips.

Adhere to the oven use; wipe wet food or liquids from the sidewalls, inner door glass, floor, and roof using a wet, damp rag.

Do a thorough cleaning of the oven’s interior and racks monthly

Keep a clearance of at least 3-inches between food and heating elements in electric ovens and similar support between the main burner and food in gas ovens as well as the broiler if present.

Make use of the self-clean feature not more than five times yearly.

Whenever you notice smoke, it is noble to have a look immediately to establish its cause. It is common for the oven to emit smoke. However, if too much smoke fills the room, it is a concern—anyhow, these issues are easily fixed.

You can fix the smoke issue caused by grease, food debris, spills, and residues by simply cleaning. On the other hand, if the smoke results from faulty components, call on your company or an expert to come and fix the issues to avoid risking your life or even worsening the problem.