An Educational Guide For Determining Petrol Engine Causes Of Strange Exhaust Colors
December 20, 2022 / By Zunair Tahir / Automotive Blogs
You drive your automobile for a run one lovely day. You see a noticeable smoke waft emerging from your car’s exhaust pipe all of a sudden. Do you know what the exhaust color actually indicates before going crazy and phoning your go-to mechanics?
Often, especially in the winter, observing a vapor trail coming from the exhaust pipe is not cause for panic. It is typical to see some smoke coming from the exhaust pipe because there is where poisonous and noxious gases are directed away from the engine. Most of the cigarettes that you see coming out of pipes on a daily basis are safe.
However, you could feel the need to call your mechanic if you see the fume has a black or grey color because it is a sign that something is not operating properly. As a general guideline, you should fix your automobile as soon as the smoke from the exhaust pipe starts to persist and get deeper in color.
1. White Exhaust Smoke:
When you notice white exhaust smoke coming from your gasoline vehicle, you should first determine whether it is indeed smoke before becoming concerned. It may sound absurd, but a lot of the time the thin, light white smoke coming from the exhaust pipe is only water vapor.
You don’t need to worry about the possibility of your automobile exploding in the middle of your street if the “smoke” rapidly goes away once you start your car. Quite frequently, especially on chilly days, this will happen, and as the engine heats up, the “smoke” will automatically disappear.
However, your automobile is in trouble if the smoke is real smoke, which is persistent, heavy, thick, and occasionally grey in colour. A broken block, a leaking head gasket, or a cylinder head might be to blame. Whatever the source, you should take your automobile to the mechanic as soon as you can since these are severe issues, and you definitely don’t want it to break down on the side of the road.
2. Blue exhaust smoke:
White smoke from a gasoline-powered car’s exhaust pipe might occur for a number of causes, but blue smoke only indicates one thing: burning oil. Despite this, there are a lot of reasons why oil burns.
Piston rings, valve seals, or cylinder walls may be at fault. As a result of damage to one of these components, oil might flow into the combustion chamber and ignite alongside the fuel. If you don’t get the automobile to the shop right away, it will perform poorly and the spark plugs might get damaged.
You might have noticed that the blue smoke periodically comes and then vanishes. Your piston rings are destroyed if it spews out of the exhaust pipe while you accelerate. The valve seals are harmed in the case of deceleration. Knowing these signs and informing your technicians of the information may enable them to do the repair more swiftly.
3. Gray or black exhaust smoke:
You don’t need to panic when your beloved four-wheelers emit some nasty, dirty black smoke, despite the common rule that the sooner the car should be checked out, the darker the smoke is. When this occurs, the engine in your automobile is likely using too much fuel.
There are several causes of the black smoke, including broken fuel injectors, blocked air filters, etc. Whether you notice black smoke, you should pull over, inspect the air filter and other intake parts, and then check the fuel return line to determine if it’s clogged.
A clogged air filter is a problem that is less dangerous and easier to solve. Call your mechanic right away if none of those components are malfunctioning so they can investigate the cause of your car’s improper fuel combustion.
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