It could be caused by any one of the following problems: 1.

White smoke from your engine is usually a sign that you have a coolant leak. If you think your car is using excessive fuel you should have the engine looked at by a trusted mechanic. When your ignition timing is off, your engine will burn more fuel than necessary and in extreme cases pump out clouds of black smoke. In order to burn properly, fuel must be ignited at the right time during the combustion cycle. The inlet manifold supplies a mixture of fuel and air to cylinders in the engine.Ī blocked inlet manifold will only allow a limited amount of the mixture to the combustion system, which can cause your engine to cough up a cloud of dirty smoke.Īlthough this part can be cleaned at home, it’s best to enlist the help of a professional if you’re not sure what you’re doing. It’s important to get the problem checked as soon as possible by a professional, as your car will be burning too much fuel and therefore producing excessive emissions. When the part fails and delivers too much petrol or diesel to the engine you’ll notice dark smoke. Older cars use a carburettor to mix air and fuel. You should check with your local garage if the fuel pump needs to be replaced at the same time. The part can be found either outside or inside the fuel tank and this will affect the cost of a replacement.

Just as the name suggests, this part of the fuelling system regulates the pressure of petrol and diesel being fed to your car. They can become clogged up with dirt or low-quality fuel, or leak because of wear and tear to the seals.īoth the seals and injector itself can be replaced by a qualified mechanic. Faulty fuel injectorįuel injectors deliver petrol or diesel into the engine as a high-pressure mist. If you catch either fault early, they are usually easy to fix. It could also be caused by a clogged air filter. Black smoke leaving your engine is often a sign that too much fuel is being burned.

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