Q: Blue smoke from tailpipe

asked by on May 07, 2017

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't it be?

My car has 82000 miles.

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.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

I accidentally put expired motor oil in my car, will it damage my engine?

Hey there, thanks for writing in about your 2002 Subaru Outback. I don't think you should have any worries. As long as the oil did not have any contamination from water then it should be okay to use the expired...

Coolant leak.

The cooling system needs to be checked for leaks. Look for areas where there is a white buildup from coolant spray that has evaporated. A pressure test of the cooling system needs to be performed to see where the leak...

Engine light comes on day after getting gas. Already replaces a leak in gas line. What can it be?

Hi Alyssa. Thanks for contacting us today. Typically if a check engine light comes on after filling the fuel tank, it's due to a vapor pressure problem. This often is triggered by one of the EVAP system components. This system...

Related articles

A Guide to Motor Oil Additives
Motor oil contains various additives to make it perform better. Conventional and synthetic oils both contain additives which help prevent engine wear.
A Buyer’s Guide to the 2012 Mini Cooper Coupe
The The 2012 Mini Cooper Coupe has a distinctive style that offers an agile and fast ride to its passengers. The goal with the Coupe is to provide buyers with an alternative to the Porsche Cayman, Audi TT Coupe, and...
What Type of Oil Should I Use?
Changing oil in your car is among the most important car maintenance tasks. Your engine may use synthetic motor oil, conventional, or either oil type.