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I would suspect an injector. I don't work on farm equipment, but if it were a road tractor, that's what it would be. We often add some fluorescent dye (like some a/c oil w/ dye) to the fuel filter, and run it with the valve cover off while shining a UV light on it. You should be able to see with one is leaking fuel into the oil.
What else can I help you with?
How much oil in 3010 john deere diesel tractor?
8 qt>
Can you use John Deere oil in your Dodge diesel 5.9 motor?
if it si 15w40 engine oil
How many quarts of oil does it take for a John Deere 332 diesel?
The John Deere 332 diesel typically requires about 3.5 quarts of oil for its engine oil capacity. It's always best to consult the owner's manual for the most accurate specifications and recommendations for oil changes and maintenance.
What is the oil capacity for a John Deere 6068 Diesel Engine Generator?
@ 5 gallons with Wix oil filter 57243
Where is oil filter on John Deere 317?
The 317 john deere does not have an oil filter.
How do you change the oil in a John Deere 1050 tractor?
oil capacity of a john deere 1050
John Deere oil filter AM107423?
This is the oil filter that John Deere uses on all Kawasaki Motors that are used in John Deere equipment.
What is the oil capacity for John Deere 1949 model A?
A John Deere model A holds 9.25 qts of oil.
What kind of hydro oil does a John Deere 318 take?
john Deere 318 what oil in hydro does it take
What is the oil weight used in a John Deere 826 Snowblower?
Oil weight for John Deere 826 snowthrower
How do you change oil john Deere GX85 lawn mover?
how to change oil on JOHN DEERe GX 85
What is engine oil capacity 2020 John Deere tractor?
The oil capacity of a John Deere 2020 is about 7 quarts.
