White Smoke From the Exhaust on Startup Then Goes Away (Causes and Fixes)

When using cars for a long time, the worse the engine quality is inevitable. If you do not know how to take care of the car, the internal components will fail, and you need to get serviced.

One common phenomenon warning you that the car is having problems is white smoke on startup then disappears. This usually happens when there is a buildup of water inside the exhaust pipe.

In addition, there are many different reasons for this phenomenon. Let’s find out the causes of white smoke on startup then disappear and fix them effectively.

Common Cause For White Smoke On Startup Then Disappears

A cloud of white smoke coming from the exhaust pipe will be released into the air when you start the car. This phenomenon helps you identify some parts that are having problems. Here are the causes of white smoke on startup then disappears:

Leakage of coolant

The most common cause of white smoke on startup and disappears is a coolant leak. This liquid is located inside the exhaust pipe to help reduce the temperature of the car’s engines. This type of compound will also provide lubrication to the components to help the car operate properly.

However, if you start and white gas appears, the coolant has leaked and cannot cool the vehicle’s internal components. This phenomenon will also cause unpleasant odors for you and those around you.

If you do not find a way to repair it in time, the engines will suffer a great deal of heat, and it will be difficult for the car to work correctly. Worse, the internal components will fail.

Leakage inside piston ring

Another scenario that leads to white smoke on startup and disappears is a leak inside the piston ring. When this part has a problem that causes a leak, oil and gasoline will mix inside the combustion chamber and break the ratio that helps the car start.

The mixing of fuels will lead to the energy that helps the engine to operate without quality. Since then, your car cannot run normally.

Damaged fuel injector

The fuel injector is responsible for transferring gasoline into the combustion chamber. This unit will then ignite the fuel and generate power for the engines to operate.

However, if the fuel injector fails or jams, this part will not adequately supply the engines. If the power transmission is too little, the vehicle’s internal components will not be able to function. If the injector provides too much, excess fuel will be inside the combustion chamber and cause white smoke on startup, then disappear.

Incorrect injection timing

The transfer of fuel to the vehicle’s interior requires the correct timing for the combustion chamber to ignite and then convert to energy fully. Therefore, the fuel injection pump time needs to be highly accurate to operate normally.

However, if the injector sends gasoline in too early or too late, the combustion chamber will not burn all the fuel and cause excess inside the engine. Residual compounds will leak to the outside of the exhaust and produce white smoke when starting the vehicle.

The air filter is dirty

The air filter has the function of filtering dust outside the air before entering the engine. But with long-term use, this part will reduce its ability to clean and deposit dirt.

When the air filter is dirty, the engine’s air will have more dirt from the outside environment and affect the fuel transmitted. That will lead to white smoke on startup and disappears.

If you are concerned about seeing white smoke from your exhaust during start up, give us a call today at The German Auto Doctor