Mechanics

WHITE SMOKE FROM EXHAUST-SOMETIMES

Cadillac El Dorado

I have a 97 Cadillac Eldorado, V8, 4.6 Northstar engine.
last week the Service Engine light came on. I noticed some white smoke from exhaust.
It's been 3 days, no more white smoke, light still on.

No overheating, no coolant low message, oil seems fine.

Is this a gasket problem?
Thank You.
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Bruno1953
June 9, 2007.



The Northstar engine is common for headgasket troubles. Are you losing coolant?

No coolant loss noted.

Tiny
Bruno1953
Jun 9, 2007.
Well thats a good sign. You need to get the codes pulled to see what's up with the CEL

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Tiny
Charlestmoss
Jun 27, 2007.
Different ways to go about it. Leak is internal of external. You can pressure test it, where the system is put under pressure and monitored for pressure loss and visual checking externally. You can pull the plugs at this point and see if coolant is leaking into the cylinders, if no external leak was found that is. OR you can use a chemical that is added to the cooling system and will change colors of exhasut fumes or in cooling system.


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