Your Subaru shouldn't have any visible emissions coming from its tailpipe. If you see billowing smoke, it's likely due to a problem with the engine. That's the bad news. The good news is that the color of the smoke can be a big hint as to the nature of the problem. Below, find the main smoke colors and what they mean; then, be sure to get your Subaru inspected at an authorized Subaru service center.
4. Is It Smoke or Steam?
Before you start panicking, make sure that the emissions from your Subaru vehicle's tailpipe are actually smoke. If your car has been left outside overnight, it's possible that condensation could have collected in the tailpipe. As the pipe gets hot, the condensation can evaporate and make steam. At first, this can look like white smoke; however, it will generally pass quickly and be gone by the time your engine has warmed up. If that's the case, splendid! But if the emissions last longer, it's likely one of the other problems listed below.
3. White or Grey Smoke
If your car releases clouds of white or grey smoke, the most likely culprit is a leaking or failed head gasket. This component makes sure that the coolant and fuel stay separate in your engine, and its failure can lead to these two mixing. In addition to releasing this smoke, a failed head gasket can cause massive damage to your engine. Turn off your car immediately and have it towed. We also have more information about head gasket replacement service
2. Blue Smoke
Blue smoke can often look like grey smoke at first. But if you notice a distinctive bluish tint, it may signal that the engine is burning lots of oil. This could be due to worn engine components like piston rings, valve seals, or PCV (Positive Crankcase Ventilation) valves.
1. Black Smoke
Foul-smelling black smoke coming from your engine's exhaust pipe may be due to a fuel mixture that's too rich. This means that there's too much fuel in the fuel-and-air mixture. If your engine is running this rich, it risks serious damage. The air filter, fuel injectors, and fuel pressure regulator could all be causing this problem.
