As an Amazon Associate I earn from qualifying purchases.

Can I Drive My Car With a Broken Spark Plug?


Broken spark plugs cause a lack of acceleration, poor gas mileage, choppy idling and strange sounds. 

Can I drive my car with a broken spark plug?” Is it safe to drive to the mechanic, or should you contact a tow truck? Here’s what I learned from talking to local mechanics:

A broken spark plug should not be driven. Why? Because it can harm your vehicle. To avoid engine problems, disconnect the coil and inductor wires from the blown spark plug as soon as possible.

Each cylinder in a V8 engine has a separate spark plug. If you care for your car, then you should not risk your vehicle driving with broken spark plugs.

Can I Drive My Vehicle with A Broken Spark Plug?

When traveling, a malfunctioning spark plug can be pretty dangerous. The air/fuel combination will not burn correctly if your car’s spark plug is blown. Consequently, there will be a lack of control and a collision.


One of the most prevalent reasons for an automobile accident in the United States is a faulty spark plug.

Do not drive your automobile yourself if you find it isn’t running smoothly due to a damaged spark plug. Instead, contact a tow truck or bring your vehicle to repair. 

You might get into many problems if you try to drive with a blown spark plug.

Why Your Spark Plug Could Be Broken?

Your spark plug may have blown. A damaged wire in the ignition coil is the most typical cause. It’s possible that if this wire is damaged, the sparks will be deflected away from the engine’s spark plugs.

Another reason may be that worn or broken engine parts reduce the efficiency of transporting electricity through the components. 

Wet weather can also lead to salt deposits on the road, which can impede the flow of electrical current to the spark plugs.

For example, your fuse box or ground wire may be to blame if your vehicle’s electrical system is malfunctioning. Your engine may be overheating and causing your spark plugs to fail.

 Symptoms of a Damaged Spark Plug

You should replace your spark plug if you notice any of the following signs and symptoms while driving:

  • Ineffectiveness or a decrease in power.
  • Rapid and Unpredictable Explosions.
  • Incessant malfunctioning
  • Frustrating Race.
  • Noise from the Engine.
  • Fuel Consumption is low.
Broken dirty spark plug with blue sparkle

Cost to Fix a Blown-out Spark Plug

Repairing or replacing a blown spark plug can be expensive, but it is usually within reach for the average household. 

For a replacement spark plug, you should anticipate paying between $50 and $100, depending on the make and model of your vehicle.

What Causes Spark Plugs To Get Wet?

Oil, gas, or coolant can contaminate the spark plugs. It’s merely a temporary cure to replace wet spark plugs. Spark plug electrodes and porcelain tell the tale of what’s going on in the engine. 

A moist spark plug is caused by one of three causes. 

An oversupply of fuel:

A gray to matte black finish will be equally dispersed throughout the spark plug electrode and porcelain if the fuel mixture on the electron is too rich. 

The hot portions of the spark plug tend to accumulate a lot of the carbon residue. There are a few things to consider if you see a spark plug like this:

The engine’s performance may be gauged by comparing its long-term and short-term fuel consumption.

Check the injectors for proper operation. This issue might be caused by an injector that is blocked or by an injector jammed open.

The leak of engine oil:

A spark plug will take on a charred black appearance when exposed to motor oil

If the black finish is lustrous rather than matte, it will not resemble carbon deposits from burning gasoline. In other cases, it might be unpredictable and even accumulate on the cooler side of the spark plug.

Because crankcase vapours and oil droplets are leaking into the combustion chamber, your spark plugs may be getting moist from oil.

The positive crankcase ventilation system, outrings, or other factors may be blamed. So, before you put in the new spark plugs, make sure you figure out what’s wrong.


If coolant is making its way into the combustion chamber, your spark plug may be getting wet. When the intake manifold gasket or the head gasket fails, this occurs.

A coolant leak-damaged spark plug will have a gray, ashy look. Because of the type of coolant used, it may seem slightly different. 

You must thoroughly inspect your cooling system for leaks before replacing all faulty spark plugs.

Dangers of Driving With a Blown Spark Plug

Driving with a blown spark plug has a few possible dangers. When the power steering fails, it might be challenging to control the vehicle.

The engine may fail to start in severe instances. Weak brakes, dashboard warning lights, and a bumpy ride are all possible side effects of a blown spark plug.

How Often Should We Change Spark Plugs?

An explosion caused by a blown spark plug can harm the engine, transmission, and exhaust system. This explosion can cause catastrophic harm or death.

If you encounter these symptoms following a sparkplug malfunction, take your automobile to an automotive professional for evaluation and repair.

Spark plugs should be changed every 30,000-90,000 miles (48,000-144,000 km).


Even if driving with a blown spark plug is not recommended, it is possible to do so safely. The consequences of driving with an engine that isn’t functioning smoothly may be devastating. So it’s crucial to take the required safeguards.

Additionally, it is crucial to get your automobile often examined and ensure that all of its other components are in excellent operating condition.

Finally, never operate a motor vehicle while intoxicated or impaired by drugs or alcohol, and always buckle up.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top