Skip the auto shop - Our mechanics make house calls

Q: Blew whitish smoke out both ends and dead

asked by on

Husband was driving and said it acted like it wanted to go dead turning but when he was coming to a stop, whitish smoke blew from under the hood and out the tailpipe and went dead. Couldn't get it to turn over. Oil still in.
My car has an automatic transmission.

A: Hi there: When an engine blows out white/b...

Hi there:

When an engine blows out white/bluish smoke, it’s typically caused by one of two things; bad piston rings or bad valve guides in the cylinder heads. When the smoke comes out while accelerating, it’s usually caused by oil getting past the piston rings in the combustion chamber. If it’s while the car is decelerating, it’s typically caused by the valve guides. Both situations mean that oil is burning and can cause an engine to quit running if it’s a severe issue. However, it can also indicate a severe coolant system leak, which is common with a blown head gasket.

The best suggestion I would offer is to have a local ASE certified mechanic inspect your vehicle to properly diagnose the smoke that emitted and suggest a repair.

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: Van will not start randomly

Hello. If you have a new battery and new terminal connectors, then I would be curious about the starter solenoid. That could cause temperamental starting with a perfectly good battery and electrical system. If the starter solenoid is beginning to...

Q: Brakes grab and lock up occasionally - 1990 Chevrolet G30

Make sure the brake pushrod has some freeplay, how ever small. Also check the "check valves" on the hydroboost system to make sure they are releasing residual pressure appropriately.

Q: Clutch doesnt work

You most likely broke the clutch or transmission input shaft gear. This most likely happened when you started the engine without pushing in the clutch. The normal way was to push in the clutch to start the truck. Now you...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...