Here is one on John Deere Bulletin Board, last name is Chuck-----, don't want to give the full name. Only he says there is a code.
Bad days can happen as a tech. or for anyone.
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9870 sts lots of smoke!!!
Posted: Jul 24, 2008 3:32 PM
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Just wondering if anyone else has seen this on any other 9870's when you start him up it smokes blue and grey after it warms up and pilot injection turns off it seems to be just faint then when you enguage the seperator and rev him up it pours out black smoke and is also very sluggish.Also it is getting egr fault codes we replaced the egr valves and tried recalibrating them the values going to the egr seem to always be 0 does this sound right. Any ideas would be appreciated.