Any smoke apart from the white and black one is a danger warning, including the blue smoke from the exhaust when accelerating. The color of the smoke might be different depending on the type of problem your car’s internals are facing.
However, blue smoke from the exhaust comes mostly due to the leakage of oil into the combustion chamber, where it burns. The smoke then leaves through the exhaust pipe.
Unfortunately, this might sound like a trivial problem, but if proper steps are not taken, it has the potential to turn into a much bigger complication. So, halt your engines as we ride through this problem together!
Reasons and Fixes for Blue Smoke
As all problems have a root, so does this out-of-the-blue one too! To get to the solution, you must identify the problem cautiously.
Here are the most common ones of them all –
Oil Dripping on the Headers
This is actually quite a smelly situation! The gasket is at fault in this scenario. The oil escapes from the worn-out gasket through the engine block and the head.
Eventually, the oil drops on some of the hot parts of the engine, which burns to produce blue smoke. This smoke will automatically release from your exhaust, producing a smell.
This problem is due to a bad gasket head, as when it gets too heated up, so gets distorted. Thus, allowing the oil to escape from in between. The cylinder head demands to be changed immediately.
On average, getting this done might cost you around $1000-$2000. However, this is not due to the parts being expensive but the charge of fixing them!
Oil Dripping on the Heated Engine Components
Kind of similar to the previous one, this one is also due to the leakage of oil on the hot parts of the engine. This is mostly due to the valve cover gasket not doing its work properly.
Although you might notice this blue smoke from the exhaust during acceleration or even when resting. As the oil is provided with heat, it evaporates, causing the formation of blue clouds of smoke.
Furthermore, changing the valve is comparatively less expensive than changing the gasket. If you want an estimate, then we would say that a budget of around $500 should get the work done.
Oil and Fuel Mixture
Another most commonly seen case is the fault in the Positive Crankcase Ventilation Valve. This is due to the use of worn-out oil.
As worn-out oil is less effective in reducing the friction formed in your car engine, so eventually, the valve seals will dry out and crack.
As a result, they will not be able to efficiently keep the oil and fuel separated. In due course, the oil and fuel will form a mixture that will produce blue smoke during the combustion process in the engine.
This might lead to the need to change the entire engine. Therefore, you should never overuse your transmission oil.
Faulty Glow Plugs
A bunch of faulty glow plugs can lead to the emission of blue smoke whenever you start the car. Your car will take much longer cranking time as it will not be able to start normally.
The most preferred way to test this is with the aid of a 12-volt test light.
Simply connect the battery’s positive terminal to the test light and ensure that the wires are connected to each and every glow plug in a sequence. The reading will determine the situation.
However, there’s nothing to worry about as this is easily repairable with a budget of around $100 to $500.
We hope that you understand the fact that there’s nothing to worry about when you spot blue smoke from the exhaust when accelerating. If you investigate the source of the problem clearly, then the solution is pretty much in your own hands!