John Deere 955 rough idle

/ John Deere 955 rough idle #1  

Dirtdeere

Bronze Member
Joined
Oct 16, 2012
Messages
65
Location
California Ag Valley Greenbelt
Tractor
All Ag, 4 kubotas, 6 deere, reapers, harversters, threshers, hoes, etc
Help! All of a sudden my 955 idles super rough. It takes a while to get it up to high rpms also. It sounds ok when it's revved higher but it is severely lacking in power. I replaced the fuel filter and bled everything and it's still kaput. Any ideas? Thanks. I feel like something is seriously amiss when my tractor is sick!
 
/ John Deere 955 rough idle #2  
It was running rough, you changed the filter and it still runs rough?
 
/ John Deere 955 rough idle #3  
Check amount of fuel flow from tank to inj pump. Is tank venting????? I feel like something is seriously amiss with your profile photo!:thumbdown:
 
/ John Deere 955 rough idle
  • Thread Starter
#4  
It was running rough, you changed the filter and it still runs rough?
ya I changed the filter thinking that was it and it still runs rough. I just drained the tank and put fresh fuel in it and it still runs rough . What next?
 
/ John Deere 955 rough idle #5  
ya I changed the filter thinking that was it and it still runs rough. I just drained the tank and put fresh fuel in it and it still runs rough . What next?
I would try changing my profile pic for starters.
 
/ John Deere 955 rough idle #6  
Is she the operator ,could explain loss of power .There are special cases out there , and you are in the top 40 .
 
/ John Deere 955 rough idle #9  
It sounds like you may have a bad injector. Try loosening the line at each injector one at a time while engine is running. On a good injector, the engine should run noticeably rougher or even stall. On the bad injector, you won't notice any difference.
 

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