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bakwoodsfarm 
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Joined: 02 Sep 2010
Location: Woodleaf,NC
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 Topic: Agco Allis 6670
Posted: 03 Apr 2024 at 6:26pm |
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I have a 6670 with air cooled same engine, parked it in the yard 3 days ago, went to move it this evening and it fires right up and runs away!!!! Please someone help or tell me who to talk to, I need this tractor!!!!
Brad Kennedy
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Tbone95
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Joined: 31 Aug 2012
Location: Michigan
Points: 11610
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Posted: 03 Apr 2024 at 7:08pm |
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Does it shut off by cutting off fuel or do you have to kill it with brakes?
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bakwoodsfarm
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Location: Woodleaf,NC
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Posted: 03 Apr 2024 at 7:41pm |
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Have to kill it with the brakes
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Tbone95
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Location: Michigan
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Posted: 03 Apr 2024 at 7:56pm |
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Sounds like it could be getting oil from somewhere then! Not good. I wish I could help you more specifically.
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Lynn Marshall
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Joined: 13 Sep 2009
Location: Dana, Iowa
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Posted: 03 Apr 2024 at 10:20pm |
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Those tractors use individual, cam driven, pumps. One pump for each cylinder. They have a common rack or rod that ties them together so that each cylinder gets the same amount of fuel. That rod is controlled by the governor. I would check your throttle cable movement to be sure that it is working freely. If that is ok, then you probably have some sort of governor issue. There are a set of weights inside the governor and function similarly to the weights in a gas tractor. Most of us are familiar with what happens when the weights in a gas tractor fly apart.
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tbran
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Joined: 14 Sep 2009
Location: Paris Tn
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Posted: 04 Apr 2024 at 4:21pm |
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IF memory serves correct - pull the oil filler cap neck and see the 'rack' - you have an injector pump trying to seize. IF you can get the rack freed up by moving it fore aft - run about a gallon of ATF in the fuel and continually rev up and down for a while. The rack turns the delivery valve in each pump - one sticking can cause this. It is a rack and pinion system with the pinion in each pump.
Edited by tbran - 04 Apr 2024 at 4:22pm
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When told "it's not the money,it's the principle", remember, it's always the money..
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bakwoodsfarm
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Joined: 02 Sep 2010
Location: Woodleaf,NC
Points: 511
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Posted: 05 Apr 2024 at 10:43am |
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Thanks for all the answers, I’ve torn into it and found 2 pumps froze solid. Now to find some reasonable priced ones🤣🤣
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