Blue smoke from tailpipe

Ok so I had and oil change twice because of oil leaking onto exhaust manifold only when turning car on for first time in the morning . It all started happing with first oil change they said they spill a lot of oil all over my motor . It's been a month and it's still smoking so I took it to another shop and hey changed oil but problem was still there . Took my car in Friday to get it checked out at a local garage and three said it could be the o ring to the oil filter so he changed that and I don't see oil leak no more but I still get blue smoke from tailpipe when a/c is on what can
Experienced mechanics share their insights in answering this question :
Bluish tinted smoke from the exhaust means that there is an internal oil leak into the combustion chambers from the valve guides, valve stem oil seals and/or the piston rings. Cylinder compression can be tested to get an indication of the condition of the rings. Installing new valve stem oil seals often reduces the amount of oil getting into the combustion chambers and ending up as smoke in the exhaust. You can have the situation diagnosed if you request an engine smoking diagnostic. Once you have that diagnostic, the mechanic can help you weigh your options and determine what repairs will be both helpful and cost-effective. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

How to Identify and Fix Common car Problems ?

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

Thick blue or gray smoke is an indication of the vehicle burning oil, which means that oil is somehow leaking into your engine`s combustion chamber.
Blown Turbocharger

If your car has a blown turbocharger and emits blue smoke, it`s not a coincidence. You`ll likely notice a large blue cloud of smoke right as your turbo blows. This results from a damaged turbo casing or a broken oil seal inside the turbo itself.

Blue/gray exhaust smoke means there`s likely an oil leak and your engine is burning oil. Time to have a qualified technician check things out. The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls.
If your car has a turbocharger, a blown-out turbo may be causing the blue cloud behind your car. A blown-out turbo can be identified by a broken or damaged oil seal. In this case, oil gets sucked into your engine`s combustion chamber. There, oil mixes with fuel and leads to blue smoke.
If the smoke from the exhaust pipe is either grey or bluish-tinged, it generally means that your engine is burning oil inside the combustion chamber. Burning oil could be due to a number of causes, from leaky valve seals to bad piston rings.
Get a new turbocharger for your car!

When these seals fail, the oil being fed to the turbo can make its way into the engine via the intake. The burning of this oil leads to blue smoke from the exhaust. Fixing a turbo requires it to be rebuilt or replaced.

Hi! A leaking turbo will usually present itself through white smoke exiting the exhaust. Usually the white smoke will result from the turbo leaking oil internally but will occasionally result from internal coolant leakage.
EXHAUST SMOKE

This could be caused by a crack in the turbo housing or damaged internal seals. If this symptom is caused by the turbocharger, you`re more likely to see these discoloured fumes as the engine revs increase shortly after idling.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I have gray smoke coming out of my tailpipe but it’s not heavy smoke and my car check engine light is orange​ my car shut off
ANSWER : You did not mention why the radiator was replaced but I think your engine was overheated causing the head gasket to go bad. This would cause the white smoke out of the tail pipe and an engine misfire and overheating can cause the check engine light to be on. I recommend having the engine checked for leaking head gasket and scan the computer for codes.

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Excessive smoke releases from the tailpipe after ticking noise
ANSWER : Hi there. In some cases, if too much oil is placed in the motor, "oil blow by" will escape past piston rings; but as the mechanic stated, it typically would only last a few days. But, if they drained the oil and made sure the right amount was in the crank case and filter, that should not occur. However, the ticking noise is concerning. In most cases, the ticking noise upon start up is an indicator of lack of lubrication in the cylinder heads. I guess where I’m going here is that I’m not very confident in this mechanic’s diagnosis. I would highly recommend having a second opinion by having a professional mechanic complete a smoke is coming from exhaust inspection.

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no engine light or codes, no blue or white smoke from tailpipe but smells like burning rubber, esp. when idle. whats wrong?
ANSWER : You should have your exhaust checked to see if you have something like a plastic bag stuck to the exhaust burning and causing smell. If not then check the engine for oil leaks to see if valve cover or oil pan is leaking.

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Blue smoke from tailpipe
ANSWER : Bluish tinted smoke from the exhaust means that there is an internal oil leak into the combustion chambers from the valve guides, valve stem oil seals and/or the piston rings. Cylinder compression can be tested to get an indication of the condition of the rings. Installing new valve stem oil seals often reduces the amount of oil getting into the combustion chambers and ending up as smoke in the exhaust. You can have the situation diagnosed if you request an engine smoking diagnostic. Once you have that diagnostic, the mechanic can help you weigh your options and determine what repairs will be both helpful and cost-effective. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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Oil leaking from engine (not enough to leave driveway spots but still a leak) white/grayish smoke on startup only. No smoke while
ANSWER : External leaks could be from any of the oil seals on your engine and the cost to repair would depend on exactly where the leaks are located and how many seals need to be replaced. Certain seals are inaccessible unless the engine is removed, notably the rear crankshaft seal. Of course, as many leaks as possible should be repaired because leaking oil can damage external engine components such as rubber motor mounts. Oil leaking into the combustion chamber that is visible as smoke in the exhaust on start-up is typically due to failing valve stem oil seals. Those seals are replaceable. If you want the sources of the oil leaks identified and the repair estimated, simply request an oil leak diagnostic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic.

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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.

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running rough, blowing blue smoke then white smoke
ANSWER : Testing and diagnosing will give a technician a good idea of what to expect will be found with internal engine problems, but you can never be totally sure until some disassembly and inspection has been done. Test results leading to an expectation of finding a blown head gasket can turn out to be a cracked head, or a failed piston.

Opening up an engine that has 100,000 miles on it is risky. You really need to do some hard evaluating on what the vehicle is worth and what it may actually end up costing to fix it right. Too many engines get disassembled and partially repaired, then put back together with many old parts that should have been replaced or reconditioned at a machine shop. Of course it usually due to trying to control costs, but it frequently results in a repaired engine that burns oil, is noisy, or performs poorly. These partially-rebuilt engines rarely last long enough to justify what was invested in the repair. Have it done right or don’t do it at all.

If you decide to get this fixed, consider enlisting a qualified mechanic who can perform the necessary checks to diagnose your rough running condition and the smoke you’re experiencing. Once this is done you’ll have a good idea of what will need to be fixed and from there you can proceed with the repairs that are necessary. Good Luck.

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My car is losing coolant from tailpipe
ANSWER : Hi there. According to what you’ve described, it does sound like your mechanic was correct; a blown head gasket. The radiator reservoir leak may have lead to the blown head gasket by causing a low coolant level, thus resulting in the blown head gasket from a coolant jacket to the combustion chamber. The coolant entering the combustion chamber will cause a misfire and set the Check Engine Light. With enough coolant in the combustion chamber, engine mechanical failure will occur with damaged internal components.

The radiator, head gasket, and thermostat would need to be replaced and a coolant flush service done to remove any of the K-Seal product; these products are only temporary solutions at best. If you’d like a second opinion on this issue, have one of our mobile technicians diagnose the smoke firsthand.

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