Why Is My Drill Smoking? How I Fixed it?

When I use my drill for a long period, I could see so many problems arise. Sometimes there is smoking without any load. As well some times it overheats too much. This can arise your self also. So it is important to know about it, and I have mentioned the method to fix it.

A drill is smoking due to an electrical short, old brush with dust, stuck due to heavy load or covering the ventilation. When a drill is overheated, it can be smoke easily. Smoke is the result of spark. It will cost 50$-75$ to repair the drill, and you can do it yourself by replacing brushes.

I could see there is a spark back of my drill. That is another effect that I had to face. All these can be fixed easily. You will need some products to fix this. So let’s keep read on!

Where Drill Smoking Come Out?

Drill Smoking can be divided into two main categories.

01. Drill Bit Smoke
Drill-bit smoke rises when there are no lubricants for the drilling process. When there is smoke in drilling, let it cool the drill bit and pour the cutting oil. You can reduce the cutting speed and then restart the process.

02. Drill Inside Smoke
Inside is smoke due to overheating problem. When there is overheating action, it can increase the inner temperature. As well as due to the brushes and many reasons for smoking drill inside.

Read More About – Can you Burn Out a Brushless Drill?

Why a Drill is Smoking?

Smoking a drill can happen in two ways. When there is more load, it can be smoke as well as due to the debris it can be smoke. Due to these two reasons, there will be a light smoke with the smell. So let’s consider each one in detail.

There is torque and speed in the drill. When we work, the speed or torque can be exceeded. Some time drills can be stuck due to the more load. At that time, its coils can be heated, and some parts can be heated and melt. Due to this, smoking can arise.

When we are working with the drill, we should not close the ventilation holes. When the ventilation hole is closed, inner air is not able to flow. So inner temperature is increased, and it can be overheated and smoke.

When we use a drill long period, dust and some debris can go inside the drill. When these are mixed with inside oils and grease can dirt the inside. When the motor is rotated, these particles also move with the motor and then spark, and smoking can rise.

Why a Drill is Overheat?

Overheating a drill has so many reasons. Those reasons are also causing smoking also. Check the below reasons for overheating the drill.

01. Apply More Pressure
02. Covering the Ventilation Holes
03. Insufficient Torque
04. Electrical Short
05. Mechanical Problem
06. Old Brushes
07. Continous Working
08. No Lubricants
09. Wrong Drill Bit Angle

You can check in detail about drill overheating on Why is My Drill Overheating?

How Much Will it Cost to Repair the Drill?

The smoking drill will cost 50$-75$. You can do it yourself by using electrical contact cleaner and compressed air.

Drill Smoking Fixing Steps

You can fix the drill smoking by following the below steps one by one.

You will need

01. Remove the Power Supply

02. Using a screwdriver, open the drill by removing the fixed screws.

Carefully keep the removed screws. You can use a magnet for that.

Remove the screws

03. When you open it, you can see there is a brush.

If you can push the trigger, you can see the inner sparks.

Check the brushes

04. Remove the brushes using a needle plier and check the condition of the brushes

Remove the brushes using the pliers.

05. If brushes are not able to reuse, replace carbon brushes.

Old and new brushes

06. Using compressed air, clean the inside of the motor.

Clean with compressed air

07. Use an electrical contact cleaner to clean the commutator.

If you can remove the inner dirt material such as dust between the commutator copper parts, do it. Those will cause the spark and smoke.

clean with electrical contact cleaner

08. Fix the brushes and reassemble the drill with proper screw fixing.

09. Test it


Smoking is a result of the friction of the commutator and brushes, as well as for many reasons that I have mentioned above, so if you need to avoid smoking and overheating, do regular maintenance.

Tom Mackency

Tom Mackency

Hi, I am Tom Mackency. It has been 10 years that I have been working as a professional woodworker since 2013. I am really enjoying my carrier by creating many kinds of projects in my workshop. But mostly I like for home improvement projects. Home improvement and DIY projects are the most interesting things for me. More than that, the coolest things are power tools. Those are very precious and efficient than a decade ago. So I try to introduce so many things about power tools, woodworking, DIY projects, home improvement and many more interesting topics here.