Go BottomBlue Smoke from Exhaust
 | ncrunch32
Join Date: Dec 2003 Posts: 762 Kingston, NY 
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2004-01-02 72895
I have 195 trouble free hours on the JD 4310 I purchased this year. I am very happy with all aspects of the tractor operation, FEL, Backhoe. A couple of questions though about the diesel engine, though (since this is my first).
Is it uncommon to see an occasional "burst" of blue smoke from the exhaust (usually when going up a hill)? Also - can I expect to see some engine oil burned (maybe 1/2 quart) in the first 200 hours?
I did change the oil at 50 hours and at 192 hours.
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 | Chief
Join Date: Jul 2003 Posts: 4299 Southwest MiddleTennessee 
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2004-01-02 72897
What you describe is pretty much standard fare for a diesel engine. When undergoing a hill the engine is placed under additional load so the injection pump/govenor add fuel to maintain rpm, thus the burst of blue smoke. During the first 100 or so hours of operation it is normal for some oil to be consumed although this should gradually reduce. I would say 1/2 a quart in the first 200 hours in acceptable. This should improve as you put more hours on the engine. ....
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| ncrunch32
Join Date: Dec 2003 Posts: 762 Kingston, NY
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2004-01-02 72899
Thanks for the quick response Chief. I thought this was probably OK but I like hearing it from an expert. ....
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 | TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2004-01-02 72924
Repair manuals usually have a trouble-shooting chart that gives problems associated with gray, white, black or blue exhaust smoke. Your owner's manual may have such a chart.
Smoke is a good indicator of how a diesel is working and it's good to learn the trouble signs. In this case, Chief's comment sounds right. A puff of gray as power or rpm is added is pretty normal for most engines. Blue smoke is oil and is a sign of problems in a broken-in engine. The blue likely will change to gray after some more hours on the engine. I don't know how many hours these JD engines should have on them before they're considered broken in but 200 is getting there. ....
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