I removed each glow plug and measured the temp and voltage. They stay glowing for 17 secs. Fuel filter is changed and no crud in the bowl. I use a cleaner/ stabilizer all year long and Howse once the cold weather comes. Oil looks and smells good and level has not changed in 90 hrs since last change. It only did this when the cold weather came. Dealer charged 170 fir labor,fuel and stanadyne fuel treatment. The last time this happened was in july and it has not done it since. Now the cold weather is here and it is back. Like i said i pumped out the tank and put in fresh diesel with the same results. Here is the Youtube video link
QUOTE=Coyote machine;4299275]What was the $170 for exactly? What did your dealer do, and did it stop the blue smoke issue?
You say your glow plugs are OK- how did you verify that?
And, it sounds like unburned fuel and fouling, which could be injector related, instead of glow plug(s). For instance, if an injector has a particle fouling it's spray pattern, then it will not properly atomize the fuel sent through it, resulting in unburned fuel being present.
Your tractor is under warranty, yes?
If so the dealer should fix it, UNLESS it is a bad fuel issue causing a jammed or partially jammed injector or injection pump damage.
Have you changed your fuel filter regularly, and if so at what interval? You may have bad fuel crud/ water, or other matter in your tank, possibly.
Here's what I'd do, (after answering my questions so we have an idea what has already been done).
I'd change my fuel filter, and possibly consider draining the fuel tank. First I'd try some fuel injector cleaner for DIESEL engines, and see if symptoms change at all. Report back results.
BTW, it is NOT a normal start for any brand/model tractor to blow blue smoke for 30 seconds or more. And you might consider loading the video to youtube and then putting a link to it on this thread.
One other thing you ought to do to prevent possible engine damage is check your oil level carefully, daily until the problem is corrected. It is possible raw unburned fuel is making it's way to your crankcase/oil pan and diluting your oil as a result. This could have negative consequences for your rings, etc. if fuel IS making it's way through the engine instead of being burned. Try smelling the oil on the dipstick, and see if the level is creeping up the dipstick over time. If there is any fuel smell in the oil you'll need to change it and the oil filter to prevent dilution and possible damage to internal engine parts.