John Deere 850 blowing steam

   / John Deere 850 blowing steam #1  

Fire ranger

New member
Joined
Jun 24, 2014
Messages
4
Location
Vilonia AR
Tractor
John Deere 850
I was bush hogging with my john Deere 850 and noticed steam coming from under the engine. When I investigated it was coming from a hose attached to the side of engine above injectors..... The "hot" lamp was not on! What is going on? Thank you!
 
   / John Deere 850 blowing steam #2  
Sounds like a blown head gasket to me.
 
   / John Deere 850 blowing steam
  • Thread Starter
#3  
Thanks.... I checked the oil and there was not any coolant in it.....but there was no visible coolant in radiator.....what are some other symptoms of blown head gasket?
 
   / John Deere 850 blowing steam #4  
Sounds like the crankcase vent tube. How many hours does it have? Rings could be worn and blow by is getting into the crank case and venting out the tube.
My 2030 with about 4,000 hours "blows" pretty steady, it will even raise a cloud of dust if driving over loose dirt. I have no plans to fix it.
 
   / John Deere 850 blowing steam
  • Thread Starter
#5  
zebra five it has 1432 hours on it.... How can I tell difference between blow by and blown head gasket
 
   / John Deere 850 blowing steam #6  
Hold your hand in the"smoke" coming out of the tube, see if your hand smells of burnt oil or has a hint of the sweet smell of antifreeze
 
   / John Deere 850 blowing steam #7  
zebra five it has 1432 hours on it.... How can I tell difference between blow by and blown head gasket

Seems too low of hours for warn out rings. I think there are test strips you can get for testing the coolant for combustion gases.
 
   / John Deere 850 blowing steam #8  
zebra five it has 1432 hours on it.... How can I tell difference between blow by and blown head gasket

Seems too low of hours for warn out rings. I think there are test strips you can get for testing the coolant for combustion gases.
 
   / John Deere 850 blowing steam #9  
Are you using coolant?
 
   / John Deere 850 blowing steam #10  
Where do you think the coolant in radiator is going?
 

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