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Old 02-07-2007, 08:24 AM
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White smoke advice

If any of you have white smoke when starting a cold truck and it doesn't go away right away have it checked out. In extreme cold, this might just be unburned raw fuel, but at temps a few degrees either side of freezing it might be EGR cooler and/or valve related. If this isn't addressed soon enough, the oil cooler could get compromised and leak oil into the coolant and coolant into the oil causing a big mess.

To check a leaking EGR cooler, jack the rear of the truck about a foot high and air down the front tires so there the EGR cooler has a good slope to the front. Remove the degas bottle cap and pressurize the coolant system (here you will need a special cap). Remove the ERG valve and look for coolant. If dry, all is good, if wet (even with a droplet) EGR cooler is compromised.

I speak from experience. Monitor oil and coolant levels, colors, and cleanliness. At the time of posting, my truck is in the shop having a new EGR cooler, oil cooler and radiator being installed, because of failure of the EGR system.
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Old 02-07-2007, 08:28 AM
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I get A LOT of white smoke on start up when it's like 15 degrees or colder onmy 7.3L without an EGR. It's normal and goes away as soon as the truck starts to warm up. Matter of fact, a my neighbor asked me the other day if my truck was on fire b/c it was pouring out white smoke for 10-15 mins....it filled the whole area!!!
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Old 02-07-2007, 08:45 AM
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Hence the reference to extreme cold. The 6.0L has way too many parts an need to be monitored. I wonder about the 6.4L which has even more parts whcih could wear out.
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