Huracan 5.0. creates white smoke on colder days

2006 Huracan 5.0. Sometimes when it turns around it creates white smoke for about 30 seconds, mostly on cooler days. Mechanic where the car was taken to says it's the valve seals. Is that right? What's your opinion?
Experienced mechanics share their insights in answering this question :
It probably is the valve seals. You want to hope it’s not the head gasket blown. To check the head gasket is simple. I’ve got a video that tells you if your head gasket is blown. It’s a simple test–the blue liquid is put into a test tube and stuck on the radiator and if turns from blue to yellow, there’s carbon dioxide in the system and you have a blown head gasket. It’s only a head check of course. If it is the valve seals, you live with that.

Just change the spark plugs a little more often. If you really want to test to see if it’s the valve seals, what you can do is do a wet and dry compression test. If you do a wet and dry compression test and they are about the same, then the valve seals are worn. But, if it makes a difference, then it’s the piston rings that are worn and are making the smoke. You’ll want to hope that it’s the valve seals and not the piston rings, because with piston rings, you are going to have them eventually replaced. As for the valve seals, you can leave them for quite some time, which will burn a little bit of oil.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

White Smoke in your exhaust indicates that coolant and or water is being vaporized in the combustion chamber and could mean the head gasket is leaking, the vehicle has a cracked block or cylinder or the engine is cold.
The spark plugs are just igniting what ever is in the combustion chamber. White smoke is probably steam from water. If the coolant is leaking into the cylinders from head gasket or a crack in the head or block, the exhaust could smoke white.
Can faulty spark plugs make your car blow white smoke out of the exhaust? Yes, they can.. Craig Nicol has it right.. Unburned fuel entering the exhaust can light off in the catalytic converter resulting in white, extremely acrid smoke..
White Exhaust Smoke

White smoke billowing out of your exhaust means that coolant is likely leaking into the cylinders. This usually happens when there has been a breach in the head gasket, which makes the coolant create this white steam.

This is usually brought on by low fuel octane, oil contamination in the air/fuel charge, or excessive boost or nitrous injection in high-performance engines. It can also be caused by poorly performed repairs, a clogged injector, clogged fuel filter, or a marginally failing fuel pump.
White or Gray Smoke from Exhaust – Just like if you see white smoke from under the hood, persistent white smoke usually indicates a coolant leak. If there`s only a little bit, it`s probably condensation. Blue Smoke from Exhaust – If you see blue or dark gray smoke, that`s an indication of burning oil.
White smoke is a result of unburned fuel particles passing through your car`s combustion chamber and out of the exhaust pipe. As previously mentioned, white smoke is related to lower temperatures in the combustion chamber.
Cylinder heads sit on top of the engine block to form the combustion chamber. The parts can become warped through overheating and cause your engine to misfire. When the air-tight seal is lost, coolant can slip through openings and burn as white smoke.
Black exhaust smoke

“When your exhaust pipe gives off black smoke, one of the things to get worried about are bad or worn out spark plugs. It means fuel burning in the combustion chamber is not being done 100 percent or burnt fully. It also means that air is not being well mixed with fuel to burn effectively.

White fumes come out of the engine when engine oil leaks. A cracked gasket cover is one of the prime reasons for oil leakage leading to the production of white smoke. It`s super easy to replace a faulty valve cover gasket in the early stage.
If a valve seal has lost its grip or piston rings get worn, they can cause oil to leak into the combustion chamber. This wayward fuel then mixes with other engine elements and burns, causing white or blue smoke to escape from the exhaust manifold.
The symptoms of too much car oil

If it is overfilled, the following may occur: Dense white smoke – If you drive your car and see plenty of thick, white exhaust smoke, excess oil may be burning within the engine block, although fluids such as antifreeze may also be the culprit.

White smoke usually means coolant is getting into the combustion chambers of your vehicle. This generally happens because of a cracked or leaking head gasket, which allows coolant to seep into your cylinders. In extreme cases, you will need to replace your head gasket.
Thick white smoke coming out of the exhaust typically indicates a blown head gasket, a crack in the head, or a crack in the engine block. Cracks and bad gaskets allow the fluid to travel to places it shouldn`t be. If it travels, then the problems begin.
White smoke from the exhaust: This could be steam caused by condensation in the exhaust pipe or a more serious issue caused by an engine coolant leak. Excessive amounts of white smoke could indicate head gasket failure. Blue smoke from the exhaust: Oil is being burned.
When the oil leaks into the combustion chamber, it mixes with the fuel and air being ignited and gets blown out of the tailpipe along with them. The result is white or bluish-white smoke. This is a problem because oil does not belong in the combustion chamber.
The most common answer to, “Why is my car smoking but not overheating?” is that there`s a type of fluid that`s landed on the engine. This can be motor oil, fuel, transmission fluid, coolant, or even condensation. It can cause your engine to smoke because it`s burning off that fluid from the engine.
If a bad oxygen sensor disrupts the air to fuel ratio mixture, or too much fuel is injected into the engine, your vehicle`s gas mileage will be reduced. This excess fuel in the engine can produce a sulfuric, rotten egg smell, and may even produce black smoke from the exhaust.
Many factors can cause a spark plug to fail; from incorrect heat ranges to improper gapping, to chemical contamination. Yet 90% of spark plug damage claims are due to improper torque. Many factors can cause a spark plug to fail; from incorrect heat ranges to improper gapping, to chemical contamination.
Repeated overheating of the spark plug tip can cause the plug to prematurely fail. Overheating can be caused by many things like pre-ignition and a malfunctioning cooling system. Pre-ignition can lead to heat building up in the combustion chamber causing the spark plugs to fail.
It is considered normal when the exhaust coming from your vehicle is light or thin white. This type of smoke is usually just water vapor. You will notice it when you first start your vehicle, especially on cold days. The reason for this form of exhaust is that condensation collects naturally in the exhaust system.
White Smoke

It could be overheating, and if it is, you need to stop driving as soon as you can. You could end up seriously damaging your vehicle if you choose to just ignore it. If the smoke smells sweet, then there is an issue with your coolant.

If the seal is faulty, you may once again see blue-tinted smoke when the engine begins to run. That means the oil is getting pulled past the seal and into the valve guide.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Huracan 5.0. creates white smoke on colder days
ANSWER : It probably is the valve seals. You want to hope it’s not the head gasket blown. To check the head gasket is simple. I’ve got a video that tells you if your head gasket is blown. It’s a simple test–the blue liquid is put into a test tube and stuck on the radiator and if turns from blue to yellow, there’s carbon dioxide in the system and you have a blown head gasket. It’s only a head check of course. If it is the valve seals, you live with that.

Just change the spark plugs a little more often. If you really want to test to see if it’s the valve seals, what you can do is do a wet and dry compression test. If you do a wet and dry compression test and they are about the same, then the valve seals are worn. But, if it makes a difference, then it’s the piston rings that are worn and are making the smoke. You’ll want to hope that it’s the valve seals and not the piston rings, because with piston rings, you are going to have them eventually replaced. As for the valve seals, you can leave them for quite some time, which will burn a little bit of oil.

I have white milk coming out of my exhaust pipe but I don’t see it mixing in my oil pan when I check my oil
ANSWER : In most cases, the white smoke is an indicator of coolant finding a way into the combustion chamber. This could happen through a damaged head gasket or a crack in the cylinder head or engine block. Most of the time, this would also be followed by milky oil or overheating problems. However, it could also be a problem with the EGR system, or an extremely rich fuel trim. The best thing to do is have a professional mobile mechanic complete a smoke coming from exhaust inspection, so they can pinpoint the source of your issues and recommend a repair.

Hello, i had my head gasket repaired and after 8 months it has started making white smoke come from exhaust again and I can smell
ANSWER : Hello, thank you for writing in. With white smoke coming from the exhaust, the smell of coolant, and the (very likely although unmentioned) lowering of the coolant level, it is quite apparent that the coolant is making its way passed the head gasket and into the combustion chambers. Unless you have a cracked head, engine, or other serious damage, the head gasket is very likely the issue. Make sure you are adding coolant to compensate for the loss. Low coolant levels will not give you accurate temperature readings on your dashboard, as the sensor is located at the top and needs to be submerged in liquid to give you an accurate reading. As far as repairing the issue, replace the gasket again, and in the process inspect the old gasket for signs of failure or indications on what caused the leak the second time. If replacing the head gasket again does not solve the problem, you know you have a larger issue with the engine and can take further diagnostics from there. For more help from our technicians, contact our service department to schedule an appointment.

heavy white smoke tailpipe
ANSWER : That sounds like steam coming out of the tailpipe. You may have noticed the coolant level being low. If coolant is getting into the cylinders, it makes steam come out of the exhaust. This is a classic sign of a failed head gasket. Removing and inspecting spark plugs can confirm this. You may also notice the oil on the dipstick looks like a foamy cappuccino. Don’t drive it until you have this checked or the engine may get destroyed. Have a certified technician, such as one from YourMechanic, diagnose the smoke problem and guide you with repairs.

Was blowing smoke, bluish white smoke, heavy
ANSWER : Hi there. In most cases, when white smoke blows out of the tail pipe, it’s an indicator of coolant being in the oil and lubrication system. It’s typically caused by a blown head gasket, which could also lead to significant engine damage. It’s best to have a professional mobile mechanic come to your location to complete a smoke is coming from exhaust inspection so they can verify the source of the smoke and recommend the appropriate repairs.

My engine is smoking white smoke
ANSWER : From what you’ve described, it sounds like you have a head gasket leaking into the engine cylinder and then out of the exhaust. I recommend having a compression test done to confirm this and see where exactly the leak is. A coolant pressure test may also be necessary to pinpoint what exactly is leaking.

If you need assistance with these checks, feel free to contact a certified technician who can perform the necessary tests to diagnose the source of the smoke. An accurate repair can then be made once the problem has been pinpointed. Good luck.

Blue smoke black smoke white smoke what do they mean
ANSWER : Hello. If there is blueish smoke coming from the exhaust, then that is an indication that the engine is burning oil. This can come from the valve stem seals or from the piston rings. It can also come from the PCV system if it is not working correctly. If the vehicle is a 2015, then you may want to take it to the dealer if it is under warranty. I would also check the oil level is the oil have been changed recently. If the oil is overfilled, then this will occur. If you would rather not go to the dealer, a local expert from YourMechanic can come to your car’s location to diagnose the smoke and advise you on the repair.

Hi there. I have a 2012 Jetta 2.5 i5 with 159k miles. My car has recently started to white smoke. I replaced the ECV valve and the
ANSWER : The vehicle can be inspected right at your location without moving it. The relevant mobile service to request is an engine smoke diagnostic. If the white smoke is fairly significant and is not just at start up, when it might be attributable to the burn off of condensation, the only cause is an internal anti-freeze leak. If you have just noticed this issue, the leak may be small enough that not much anti-freeze has disappeared. You can try watching the level for a month (just carefully mark the level in the reservoir). If the level really does not change, at all, that would be an indication that it is not an anti-freeze leak, in which case it is just simply condensation. If at present you are not detecting a fall in the level of anti-freeze and there is no oil contamination, no external leaks, and no overheating, there is no harm in continuing to drive the car. However, if you notice any overheating that’s when it’s time to call it quits; overheating has the potential to do lots of engine damage. To sum up, I would request the engine smoke diagnostic and let the responding certified mechanic investigate this issue that you are observing and give you his findings, conclusion, and advice. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.