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cadillac concours has white smoke that smell of unburned fuel. Oil and water resivour show no signs of head gasket leak. Could it be a 02 sensor??? Thanks

Submitted: 833 days and 20 hours ago.

Category: Car

Value: $9

Status: AWAITING CUSTOMER ACTION

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Posted by Hammer Time 833 days and 20 hours ago.

Answer

White steamy smoke only means one thing and thats that you are burning coolant in the combustion chamber. Those Northstars have a known serious problem of blowing head gaskets because the headbolts pull the threads right out of the aluminum blocks. This is a major problem to repair and usually means another engine.

833 days and 20 hours ago.

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Reply to Hammer Time's Post: If I was burning coolant in the combustion chamber whouldn't the coolant level be low and the exhaust smell sweet? what would cause the strong unburned fuel smell from the white smoke?

Posted by Hammer Time 833 days and 20 hours ago.

Answer

White smoke has nothing to do with fuel so I doubt that's what your smelling. Fuel is black. And as far as your coolant level, it likely will be low eventually.

833 days and 20 hours ago.

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Reply to Hammer Time's Post: Could the o2 sensor be a pos cause? The smoke emitting is equal on each exhaust pipes again with a strong fuel smell

Posted by Hammer Time 833 days and 20 hours ago.

Answer

One more time
White smoke is not fuel, it is coolant.
Fuel shows up as black smoke and it's certainly not unburned after passing through a 1,000 degree catalytic converter.

833 days and 20 hours ago.

Reply

Reply to Hammer Time's Post: could it be a bad transmission vacuum modulator??

Posted by Hammer Time 833 days and 20 hours ago.

Answer

NO

Answer

If it was gray smoke it might be, but not white

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Expert:	Hammer Time
Pos. Feedback:	97.9 %
Answered:	8/11/2007

L1 Master Technician

ASE Mastertech with Adv level Engine performance cert.

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cadillac concours has white smoke that smell of unburned fuel. Oil and water resivour show no signs of head gasket leak. Could it be a 02 sensor??? Thanks

Optional Information

Answer

Reply

Reply to Hammer Time's Post: If I was burning coolant in the combustion chamber whouldn't the coolant level be low and the exhaust smell sweet? what would cause the strong unburned fuel smell from the white smoke?

Answer

White smoke has nothing to do with fuel so I doubt that's what your smelling. Fuel is black. And as far as your coolant level, it likely will be low eventually.

Reply

Reply to Hammer Time's Post: Could the o2 sensor be a pos cause? The smoke emitting is equal on each exhaust pipes again with a strong fuel smell

Answer

One more timeWhite smoke is not fuel, it is coolant.Fuel shows up as black smoke and it's certainly not unburned after passing through a 1,000 degree catalytic converter.

Reply

Reply to Hammer Time's Post: could it be a bad transmission vacuum modulator??

Answer

NO

Answer

If it was gray smoke it might be, but not white

Related Car Questions

One more time
White smoke is not fuel, it is coolant.
Fuel shows up as black smoke and it's certainly not unburned after passing through a 1,000 degree catalytic converter.