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Old 01-28-2013, 03:44 PM   #1
Twins
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Default White Smoke After Coolant Change

After a coolant change I started up, let it run to warm up, then started to drive. I noticed the engine burped white smoke for a few seconds then seemed to run fine but now has some light blue smoke.

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Old 01-28-2013, 05:14 PM   #2
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Unburnt fuel can do that.
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Old 01-28-2013, 08:52 PM   #3
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If its a higher mileage engine worn valve guides or valve seals can cause that.
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Old 01-29-2013, 04:09 AM   #4
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Things like a loose turbo hose clamp will cause it too.
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Old 01-30-2013, 04:11 PM   #5
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With my 6V92T I've found the following: white smoke=unburned fuel, blue smoke=burning engine oil, black smoke=too much fuel being burned. I've been told that white smoke can also be coolant steam and I would guess the odor would be different. My white smoke has a definite diesel odor similar to mosquito foggers. No idea what coolant in exhaust smells like and I hope I never have to.
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Old 01-30-2013, 09:09 PM   #6
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Quote:
Originally Posted by 77newell View Post
With my 6V92T I've found the following: white smoke=unburned fuel, blue smoke=burning engine oil, black smoke=too much fuel being burned. I've been told that white smoke can also be coolant steam and I would guess the odor would be different. My white smoke has a definite diesel odor similar to mosquito foggers. No idea what coolant in exhaust smells like and I hope I never have to.
I will be taking it down to a near by diesel shop and have them take a looksy just to be safe.
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