Usually, this occurs after an oil change, but there are some other issues that will make your vehicle expel white smoke. Don’t wait until you have a major exhaust smoking problem to react. 5L Gasoline Turbocharged Direct Injection (GTDI) engine may exhibit blue or white smoke from the exhaust while driving after extended idle. Reasons for blue exhaust smoke include bad valve seals, valve train wear in general, the PCV valve, burning transmission fluid and more. If the valve guide’s seals or piston rings are worn out, the oil will leak into the combustion chamber which in turn will burn. In addition, the car may blow white smoke due to a cracked cylinder or blown head gasket. This can lead to smoke coming out of the exhaust. Bernard. You need a three-step approach. Suppose the head gasket is spoilt and the engine leaks some oil; it is likely to drop to hot parts of the engine and eventually evaporate as blue smoke escapes through the exhaust. Remove the exhaust manifold and check to see if the cylinder head is wet with oil. Aug 3, 2022 · 1. This could be due to leakage of oil. Dec 22, 2023 · Oil spillage is one of the most common causes of smoking after an oil change. Changed oil & white smoke on start up only lasting about 10 to 15 seconds, mostly morning time & nothing throughout the day, this is going on a couple of months now & have had it with 4 different mechanics who could find nothing. This normally happens on high-mileage engines. Oil filter malfunction or clogging. Taking it to the shop and having it looked at is the proper thing to do. Blue Exhaust Coming Out of the Tail Pipe. No more smell. The rest will normally burn off as you drive the car. Black smoke indicates that your fuel mixture is too rich. No more smoke. Mar 27, 2016 · When the seals get really bad you will have constant small amounts of blue smoke at idle with a big cloud as you drive away. Also Read: Car Blowing White Smoke After Oil Change. Oct 23, 2009 · 1999 avalon blowing blue smoke. Apr 24, 2014 · seanbeck. 1. It involves using: The right oil – cheaper alternatives lack the quality you need Dec 24, 2009 · During the time when the blue smoke comes out it kind of bogs. 5 Blue Smoke From Exhaust. When you change your oil, some of the old oil still remains in your engine and will be burned off when it’s used. Blue smoke indicates that your Silverado’s engine is burning oil. Connect it to a power source and dip the extraction tube into the oil dipstick hole and position the oil pan. Most mechanics don’t know what the F they’re doing when touching a Mini or they don’t want to. It can be an indication, like blue smoke, that the car is burning oil, but it is more likely a sign that transmission fluid is being The possible sources of blue smoke are: Worn valves or guide seals; Failure to change your oil or oil filter regularly enough; Damage or wear to pistons; Turbocharger issues The solution. Your car has a blown-out turbo. 5 eco, almost 90k miles. G30 520d xdrive msport Aug 27, 2020 · These items end up getting burned as your engine runs and cause smoke. 125. High mileage oil swells and softens these elastomer seals and reduces leakage. Remove the dipstick and place it on the clean rag to avoid contaminating dirt and debris. Each engine has pistons which move up and down a cylinder. Blue smoke coming out of the tailpipe is one of the most common signs that your engine has started burning oil. RAY: Actually, white smoke means that you May 14, 2024 · Key Takeaways: Engine smoking after an oil change can be caused by various factors, including overfilling the oil reservoir, using the wrong type of oil, and blown or leaking head gaskets. If your car has a turbocharger, a blown-out turbo may be causing the blue cloud That is why you need to change the oil. Leaking head gasket. The liquid can leak into your combustion chamber, leading to reduced fuel economy and eventually, damage to your catalytic converter. Reinsert the dipstick and pull it back out looking at the dipstick for the level of the engine oil. like about a year ago my mom needed her oil changed on her car and we got some oil and changed it. The function of these rings is to help the piston to form a tight seal against the cylinder. This produces a foul burnt oil smell to all the cars behind Aug 31, 2023 · But all the while, the metal pieces are slowly beginning to wear down, creating a greater gap between the moving metal parts. Thick grey smoke can be caused by a couple of different issues. Another cause is oil dripping to the engine’s hot parts. The combination of the coolant and engine oil will create a milky TOP 3 REASONS WHY CAR SMOKING BLUE, BLUE SMOKE FROM EXHAUSTIf you have a car that smokes from the exhaust blue smoke, white smoke or black smoke, in this vid Oil can also leak from a blown gasket inside the engine block. And a burning smell coming from the wheels could mean that the brake pads are too hot. Then, when you start the engine, the oil burns along with the air-fuel mixture and you see it as blue smoke through the tailpipe. The Feb 20, 2023 · Remove Excess Oil. It may be small. Pocatello, Idaho. Dec 5, 2018. #6. The most “harmless” option is if car fluids like engine oil or coolant are Oct 3, 2015 · There was some blue smoke for a few seconds and it smelled pretty bad. However, it could also be something as simple as needing an oil change. Looks to be just excess build-up left now in the intercooler. A leaking or blown head gasket can allow coolant to enter the combustion chamber. Open your hood and allow the engine to cool down. Remove the dipstick and wipe it clean with a clean cloth. This smoke is totally harmless May 16, 2024 · Grey smoke from an exhaust. White smoke after an oil change is not normal and often indicates issues such as Feb 18, 2024 · Excess Oil In Sump. Refer to engine manufacturer's manual, clear restriction. Oct 14, 2022 · Sometimes, there’s also a gray or even blueish smoke under the hood, so let’s take a look at the main reasons behind it: Car fluids leaking onto engine parts or exhaust manifold. Defective or split EVAP canister. It cleared up, but everytime I would give the throttle a good surge, a puff of white smoke could be seen in the rear window. The leaking oil can occur for one of two reasons: 1. Car blowing white smoke is one of the everyday Smoke could also be emitted if the new oil used is not according to the original equipment manufacturer’s specifications. Figure 1. The result? Blue smoke. Nov 17, 2021 · iTrader: ( 0) 'Blue Smoke' even after PCV Valve replaced. When your car is idle, the smoke will come out from under your car’s hood. Feb 7, 2022 · Every time the oil change happens the oil filter is to be taken off, that is the moment when the scenario takes place. The exhaust manifold might even belch big plumes of blue smoke when you start the car or step down hard on the gas pedal to accelerate quickly. Read the manufacturer’s instructions and set up the pump. Blue, Gray, or Other Colors of Smoke. Mar 1, 2023 · An automobile may emit smoke for a number of reasons. On facebook one individual posted a video of the excessive smoke and said Subaru is replacing his engine. A very common problem that affects all vehicles (including the Toyota Camry) is blue smoke coming from the exhaust. If the wrong type of oil and viscosity is put into a vehicle’s engine, it can lead to excessive smoke. Feb 4, 2023 · Catalytic converter smoking can be caused by several things, including oil leaks, bad spark plugs, clogged converter, mechanical failure, cracked cylinder head, or broken head gasket that will leave you with bad fuel economy and smoke from the tailpipe. I'd watch the dipstick and see how much your burning. This may be due to natural deterioration or a faulty part. It did not do this before the oil change. One of the most common causes of smoke after an oil change is overfilling the engine oil. The best option for you is to remove some of the oil. Nov 21, 2022 · Key Takeaway. Once this gap gets large enough, oil can begin seeping into your combustion chamber, causing your engine to start burning oil. Just drain all the oil then fill it up to 3 quartz and check with dipstick then keep adding until it shows max but in your case do not fill till max a little low is better. While driving down the road, you may see blue-white smoke in your car’s rearview mirror. Oct 26, 2023 · Leaking or blown head gasket: The head gasket is located between the engine block and cylinder head. Once I'm moving I dont really see any. My 1980's Caravan with the Mitsu 2. They also cause the oil to burn and trigger more smoke development. Another warning sign for an oil change would be smoke coming out from your car’s exhaust pipe. This happens when I leave the car sitting for 1-4 days. You might detect blue exhaust fumes behind your vehicle as you accelerate or while the engine is idle. If you see blue smoke, that means that you're burning oil. It seals the combustion chambers, as well as the coolant and oil passages. It looked pretty low as best as I could tell so I added about a quart which brought it about halfway up the hash marks as best as I could tell. A car is blowing white smoke after an oil change due to potential issues such as oil seeping into the combustion chamber, coolant leaks, or an overfilled oil reservoir, all of which can cause the oil or coolant to burn and produce white smoke. When too much oil is added to the engine, it can cause the oil to foam up and get into places where it shouldn’t be, such as the combustion chamber. You must be logged in to view this image or video. Jun 28, 2023 · Worn engine is another culprit responsible for the blue smoke from exhaust issue. Jan 10, 2022 · A car blows white smoke after an oil change typically due to using the wrong oil, excess oil in the sump, or valve stem leak. Also, check to see if something is burning close by – this check is important if you’re close to a company that Sep 24, 2020 · 3. Defective MAF sensor. If too much oil is added, the engine will start to smoke. And I put the car though some serious paces before I bought it checking for smoke. Fburg A4. Jun 26, 2018 · Published: Jun 26, 2018. As the oil leaks, it can travel onto the exhaust and cause blue smoke. Blue exhaust smoke has a blueish tone, a specific density, and a burning smell. As noted above, oil issues are a common source of blue smoke coming from exhaust. The car was fine before the oil change. An excess of oil in the system can lead to aeration and increased pressure, making it difficult for the engine to handle heat and friction properly. RAY: Actually, white smoke means that you Feb 2, 2012 · chrysler kid said: Valve stem seals will smoke heavily at idle, especially when there is a large vacuum. The burning oil in the engine leads to the blue smoke coming out of your exhaust. External Leaks. The puff of blue smoke, only on start-up, is a sign of leaking valve stem seals. When these happen, the oil may not burn correctly, causing the white smoke. 3. Jun 10, 2014 · You definitely can do it yourself. I checked my oil which was all over the dipstick. There are three main types of engine smoke: blue smoke (burning oil), black smoke (running too rich), and gray smoke (burning transmission fluid). Pro-Tip: Blue smoke during acceleration means your vehicle’s piston rings may be damaged. Oil On Engine Parts. If you find a spill, wipe off as much as you can with rags. , I eliminated Oct 14, 2022 · Sometimes, there’s also a gray or even blueish smoke under the hood, so let’s take a look at the main reasons behind it: Car fluids leaking onto engine parts or exhaust manifold. I recently noticed that after I sit at a light for a minute and then start going again, it blows blue smoke out the back. Yeah hate to say it to you but the person youre replying to is out to lunch. Make sure the oil level is within the full lines. Once oil escapes it can burn off as grey smoke from various hot points around the engine. Blue smoke indicates that your Corvette’s engine is burning oil. Aug 4, 2018 · Or a combination of the two. Light vapor smoke is usually less concerning than dense, heavy smoke. Aug 20, 2023 · Significant Causes of Persistent Burning Oil Smells. This typically happens when coolant is leaking into the head gasket. There is oil getting past something somewhere and its being burnt in the cylinders. Oil Drips Onto Hot Engine Parts Apr 5, 2023 · Extra Oil in the Sump. I used full synthetic oil. Drove it like that for years. Book an oxygen sensor repair. This is caused by the oil’s inability to burn as it should, allowing it to enter the exhaust pipe. There is no way that a car that was not blowing any smoke would all of a sudden start blowing "tons of blue smoke out of exhaust" due to just switching to synthetic. Replace the bad valve seal or any other faulty parts: If the problem is May 16, 2020 · Fix The Smoking. The possible sources of blue smoke are: Worn valves or guide seals; Failure to change your oil or oil filter regularly enough; Damage or wear to pistons; Turbocharger issues The solution. The most “harmless” option is if car fluids like engine oil or coolant are Nov 27, 2020 · So, one of the reasons why a car smells like burning oil after oil change is due to oil leaks in the car engine bay. In this case, adjusting the level of oil contained within the vehicle is the most practical solution. It is often confused with white smoke, but increases significantly in volume when you step on the Jun 19, 2017 · Blue/gray exhaust smoke means there's likely an oil leak and your engine is burning oil. To protect the pipes from being damaged by the pressure or from leaking altogether, eliminate the excess oil. Feb 4, 2024 · Here are some reasons for the sudden loss of oil in a car: Oil leaks due to damaged gaskets or seals. As the exhaust warms up, oil accidentally spilled close to it will start to smoke. A loose oil filter will drip or spray under pressure, also the drain plug. Oil can also leak into the engine’s headers, causing blue smoke. Another cause of the smoke could be that the oil originally in the engine May 2, 2024 · Overfilling the Engine Oil. The engine oil drips off the oil filter on the exhaust manifold of the car and also, the engine itself. Look for oil that may have been spilled on the engine or exhaust manifold during the oil change. Drain the extra oil, then restart. Incorrect or Low-Octane fuel. As a result, the oil will scum up and become less effective at handling heat and lubrication. A faulty PCV valve, which refers to positive crank ventilation, could be the reason blue smoke comes out of your truck. If you switch back to normal oil, the seals shrink and harden back Apr 24, 2014 · seanbeck. Underfilling or an incorrect amount of replacement oil leads to oil starvation in certain engine areas, increasing heat and burning. Heat will burn oil spills, causing the smoke to disappear and the issue to be resolved. Like blue smoke, grey smoke could be a sign of excess oil burning somewhere in the engine, or a turbo needing attention, but there are other causes. Step 1. Overheating of your car could lead to the smell of fumes in your car. Keep your oil where it belongs — lubricating and protecting your engine — and reduce costly oil consumption with one application of Ring Seal Smoke Repair. But the car isn’t using an unreasonable amount of oil between changes. Faulty oil pressure gauge or sensor. The oil can also drip down into the cylinder, causing smoke and damage to the pistons and other engine parts. It involves using: The right oil – cheaper alternatives lack the quality you need Bernard. Blue smoke indicates that your Camry’s engine is burning oil. I got a code recently , so much things to fix on this car it’s stressing . Check your engine oil level using your oil dipstick. Good luck. Models. Aug 21, 2016 · Other possible causes of blue exhaust smoke include: piston wear, worn valve seals, a dirty or non-functioning PCV valve, worn piston rings, an intake manifold gasket leak, worn engine oil seals and possibly even head gasket failure. The smoke stops within a few seconds. PCV Valve. During an oil change, it’s common for the fresh oil to Apr 15, 2024 · Drain out excess oil: If a car’s exhaust starts to emit blue smoke, the oil leakage that is responsible may be due to excess oil. One might be a Dec 3, 2023 · 1. Some 2013-2015 models vehicles equipped with a 3. If the oil is too high, remove the excess oil. If it is under the hood where the blue smoke seems to come from when the car isn’t running, it’s an indication that there’s an oil leak Apr 18, 2022 · WHY MY CAR IS SMOKING BLUE, BLUE SMOKE OUT OF EXHAUST ON CARIf you have blue smoke coming out of the exhaust on your car and you may even notice oil burning At higher RPM's the engine can burn the excess oil at lower RPMs there is not enough heat to burn the oil completely so you see the smoke. Using the Wrong Oil. Engine oil or coolant contamination. Turbocharger bearing housing sludged or coked. If you want to have an idea of what Feb 15, 2009 · I fired up the old beast, idle was fine, but when I took off I saw a blue cloud of smoke fill the air. drove car around white smoke has stoped now bluey grey smoke and car back fires when accelarate Auto Mechanic: OnlineHelp , replied 14 years ago Blue gray smoke is coolant and oil being burned. If there are too many, it can cause problems. Sep 20, 2023 · The reason why coolant usually leaks is because there could be a crack in the cylinder head or even engine block. If it leaks into the engine it will burn off and you’ll get blue smoke. Even if the crack is small, the internal coolant can easily leak out and contaminate the oil of your engine. Since the car never overheated (no engine temp gauge but engine temp light never came up), no loss of coolant, no sign of coolant mix in oil, clean coolant, etc. Gray smoke from your exhaust can have several causes, but it can indicate you are burning transmission fluid. Sep 30, 2022 · 2. Black smoke from exhaust pipes can be easily corrected in most cases by changing the weight May 11, 2019 · The severity of the problem depends on the density and volume of the smoke. Hey guys i have an automatic BMW 320i E90 2010 with 110,000km. The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls. Still blowing a little bit of blue smoke when accelerating after the engine is running warm but appears to be less and less. Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs. TOM: This year's exhaust smoke comes in three basic colors. Allow the engine to cool and park on level ground; check the oil level carefully. Blowing blue smoke Just had cambelt change and full service and is now burning oil with blue smoke Posted by paul on Dec 01, 2013 Dec 24, 2009 · During the time when the blue smoke comes out it kind of bogs. So if the ring or cylinder is worn out, oil from Nov 9, 2023 · When you find the smell of oil every time you get into your car, you need to check engine oil. Blue-white smoke indicates oil around the sump, usually caused by too much oil in the reservoir. Blue smoke isn’t usually a sign that you need to change the type of oil you’re using - it’s a sign your car has an oil leak somewhere in the engine. #23 · Dec 17, 2022. Blue is engine oil. If you notice white smoke after an oil change, it’s essential to investigate the issue further to determine the exact cause. hi my name is chad and i need to find out about my moms car. Leaking coolant. Blue on startup and it goes away suggests valve seals (oil leaks through seals into combustion chamber, startup burns it off and it goes away until next time). Catch Cans, CAC hole drilled. My observations are that addiction to high mileage oil is correct. What do you think ?. What is ATV smoke after oil change? After an oil change, ATV smoke normally goes away on its own. Apr 27, 2021 · White smoke in a gasoline car is a sign of glycol burning. In addition to the black and white smoke from exhaust systems that can signal problems with your car, a mix of other smoke colors can exit through your tailpipe. Check out the guide below for a full explanation of each of these exhaust smoke color meanings. Restricted engine crankcase breather. Cracked cylinder head. Each piston has metal rings round its side like bracelets. This fix is effective only if the blue smoke appears immediately after an oil change. Change engine oil and oil filter, overhaul or replace turbocharger as required. But before concluding that the scent is from your car, you should first check your surrounding for oil pollution. Engine oil burning due to worn-out piston rings or valve seals. This is usually an easy problem to solve. Queen creek Arizona. Oct 7, 2019 · October 7, 2019 by Jason. Then it cleared up and all was good. Possible Cause. 2. 2-3 weeks ago i ordered a new PCV Breather Valve (image added Jul 7, 2020 · When your PCV gets stuck in the closed position or becomes blocked, the imbalance of pressure in the crankcase can cause oil to get into the engine. Leaky intake manifold gasket. Aug 7, 2022 · White smoke from the engine is usually a sign of oil burning. Engine oil leaks. Oil Mixes With Fuel. 2013-2015 Explorer, Flex and Taurus. Too much oil in the sump can cause the exhaust to emit a bluish-white color smoke after you’ve just changed the oil. G30 520d xdrive msport Oct 31, 2022 · To answer this question, here are 10 common causes of a car blowing white smoke, even if it is not overheating: Blown head gasket. Obviously its burning oil. Stats: - New engine - Around 4000 mile ago - Replaced cat conv with header a couple months ago - Stock exhaust with after market muffler - Oil chance done regularly (recent one was 1 or 1/2 ago, shell 10w30) Aug 20, 2023 · Significant Causes of Persistent Burning Oil Smells. I've been experiencing troubles with my car blowing 'blue smoke' and stalling at times when i come to a stop/low revs and especially when i turn hard at low revs. Remove the engine appearance cover, if equipped. May 7, 2024 · Blue smoke means your car is burning oil, and billowing white smoke from your exhaust can mean you're burning engine coolant. It is for this reason that the vehicle’s exhaust releases white smoke. Nov 15, 2022 · This will result in the appearance of blue smoke and a strong odor. Leaking engine coolant. White suggests coolant leak into combustion chamber 5. In addition, oil spillage can cause your car to smell Oct 27, 2008 · According to the OP, the car was running fine and then all of a sudden started "blowing tons of smoke" (it's in the title). A recent article in automotive news regarding Subaru quality issues attributed ( according to Subaru reps) the engine smoke to "oil dilution"-- NOT moisture accumulation. If burning oil odors continue well after service or seem more pronounced, these overlooked issues could be to blame: Low Oil Level. I drive a 2014 F150 FX4 with the 3. Raise the car hood if you smelled burning oil while driving the car. Bluish gray or grayish-white smoke is an indicator that your engine is burning oil. 6 was a smoker like this. Black smoke signifies fuel burning, white or sweet-smelling smoke suggests coolant burning, blue smoke from the exhaust indicates engine oil burning. At the first sign of smoke in your exhaust, try Rislone Ring Seal Smoke Repair (p/n 4416) and help keep your car Jun 10, 2024 · One of the simpler solutions involves removing excess oil from the system. Malfunctioning valve stem seal. Burned a quart and a bit of oil per gas fill-up. A very common problem that affects all vehicles (including the Chevy Corvette) is blue smoke coming from the exhaust. It can be corrected and prevented by fixing the respective cause and regular maintenance. Jun 2, 2015 · One reason your car may be experiencing blue smoke coming from the exhaust could be that your engine is burning oil. When blue smoke is seen coming from the exhaust system, you must check your oil and continue to Sounds like he was sloppy with the oil. The smoke from a car’s exhaust pipe can be one of several colours . In our case, the white smoke was spewing out of exhaust from 2008 Smart similar to what others described here. Dec 30, 2015 · Overfilling with replacement oil can result in burn-off. Each color is indicative of a different type of problem. If the oil is not the correct type or viscosity, it could also bypass the rings on the piston or valve seals and end up in the combustion chamber. Some dipsticks need to thread all the way home until they seat to get a correct reading, and some don’t. Once this is done, check to see whether the exhaust still produces blue smoke. Dec 21, 2016. Yes, it’s not good. Oil smoke on acceleration rings Oil smoke on deceleration seals . Time to have a qualified technician check things out. #1. Then drive the car hard to burn of all the oil from the exhaust. Expect to see a reading that’s way over the full mark. Location. Back to the blue smoke, your car’s PCV valves, valve seals, and piston rings will eventually wear out. When blue smoke is emitted from a car’s exhaust pipe, this usually indicates that a leak in the engine’s valve seals is allowing oil to leak into the combustion chamber where it is being burned along with the fuel. Make sure you are accurate with your colour decision. This results in white smoke coming from the tailpipe, usually accompanied by a sweet smell. The white smoke comes from the combustion of the oil in your engine. It’s possible for oil change professionals to overfill the engine with new oil. I assume this means that oil is dripping into a combustion chamber and burning off, and that the rings are sealing better when the engine gets warm. I did mention that oil consumption might increase a Nov 15, 2022 · It’s possible you put in too much oil if the blue smoke only started showing after an engine oil change. Blue Exhaust Smoke. However, if there is an oil leak, the turbo can end up blowing that oil into the engine’s combustion chambers. If you see white smoke, that means a new Pope was elected. A loose oil cap can spew oil during operation, which will eventually reach the exhaust system. Ensure to drain out the extra oil leaking out of its place. Change your oil filter and your oil and this problem should end – if it does not, you have another problem that may require more specialized fixes that could be a call for professional help in many cases. 2013-2015 Lincoln MKS, MKT. , I eliminated Feb 7, 2020 · When your car burning oil and white smoke is emitted from the exhaust this can indicate that the coolant is traveling into the engine’s combustion chamber or the exhaust port. Possible Remedy. Aug 28, 2023 · After you turn off the engine, oil begins to seep through the valve seals or guides, slowly accumulating in the combustion chamber. Aug 28, 2019 · Cooper S 5year old 77600km, 2 litre petrol. About 4 weeks ago the smoke has stopped & no smoke on start. Should go away unless he was really sloppy. If oil spills onto the exhaust port or the combustion chamber, it can cause the engine to smoke. Oil smoke on start up can be bad stem seals. The mass air flow sensor - MAF sensor for short - measures the air entering the combustion chamber. I've got a 1991 5. 01-28-2015 08:16 PM #16. Overfilling of oil, causing it to overflow. Generally, the PCV valve is in charge of releasing pressure that would build up in the oil pan and then reroutes the pressure to the intake manifold to burn the fumes again. This is how the exhaust smoke ends up turning white. Worn engine piston rings or liners. No car should be blowing out any blue smoke especially after warm up. 8. Burnt oil. Nov 14, 2007 · My 12-year-old car has started to blow blue smoke from the exhaust when starting after sitting overnight or longer on cold days. A very common problem that affects all vehicles (including the Chevy Silverado) is blue smoke coming from the exhaust. GREY SMOKE. Have about 500k of fwy driving to do this weekend so will hopefully clear most of the excess. This can cause white smoke to come out of your tailpipe. But now it does this every time it's started after setting for several hours or more. Oct 29, 2023 · A car will emit white fumes after an oil change because the oil is getting burned off improperly. 51 posts · Joined 2013. The only solution is to locate and repair the source of the leak. 0, with about 104 thousand miles on it. Turbo oil line checked and all clear. Check the oil level, check multiple reliable sources for the correct fill amount, and check the PCV valve and hose(s). Stats: - New engine - Around 4000 mile ago - Replaced cat conv with header a couple months ago - Stock exhaust with after market muffler - Oil chance done regularly (recent one was 1 or 1/2 ago, shell 10w30) Aug 7, 2018 · 3. Blue Smoke. Oil pan damage leading to leaks. As a result, the phenomenon occurs and it’ll happen mostly every time you change your oil. it was 5w30 like it says on the cap, it was working fine and then one morning is started to blow some blue smoke and we didn't know why that was, my moms Without enough oxygen, there will be incomplete combustion, causing an outpouring of black smoke from the exhaust. ue vs bi ir gt ry vn tk pr as