Skip the auto shop - Our mechanics make house calls

Q: failed smog test...white smoke coming out of exsuast pipe..burning oil..

asked by on

Do you think it's warn gaskets?

A: Hello. Typically when you have white smoke/...

Hello. Typically when you have white smoke/steam coming from the exhaust, you have a blown head gasket. The gasket is allowing oil and coolant passed when it should not. Have you checked the level of your coolant to make sure that the white smoke is a result of burning coolant? If this is the case you will see a decrease in level. Check the radiator’s level, and the overflow tank. Also pull out your oil dipstick and check it for a white milky film or foam in the oil. This is a sign that coolant is also entering the oil system through the blown head gasket. The gasket replacement is fairly easy, but accessing it can be difficult and time consuming. Make sure you have a repair guide if attempting to do this from home. Have this inspected at ASAP, as the further it is driven at this point the more likely you are to have major engine damage. The oil is not capable of lubricating the engine with coolant contamination.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Q: My car is losing coolant from tailpipe

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...

Q: How much would a head gasket cost on a dodge caravan? 1999 Dodge Ram 3500 Van

Hi there - unfortunately, this is not a service YourMechanic can offer at this time. Thanks for thinking of us though!

Q: Engine won't start while hot after replacing head gasket.

Hi there. The code 12 is for your distributor has no reference. When the engine gets hot, the secondary circuit on the ignition coil gets hot and will not work. I recommend replacing the ignition control module and then recheck....

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...