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dunseth
New User
Joined: 22 Feb 2013
Posts: 2
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 Posted: Fri Feb 22, 2013 7:48 pm Post subject: engine miss firing |
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2020 deere diesel runs good at idle to 1000 rpm. then above 1000 rpm. engine starts fluttering and wont rev up over 1500 rpm. then sometimes the engine will die but it will restart it has never quit running at idle to 1000 rpm. as of yet. any suggestions will be much apprecated. thanks maurice
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Jerry/MT
Tractor Guru
Joined: 22 Jul 2003
Posts: 9852
Location: Western Montana
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| Posted: Fri Feb 22, 2013 10:15 pm Post subject: Re: engine miss firing |
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Air in the fuel delivery system, dirty or worn injector?
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Jerry/MT
Tractor Guru
Joined: 22 Jul 2003
Posts: 9852
Location: Western Montana
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| Posted: Fri Feb 22, 2013 10:16 pm Post subject: Re: engine miss firing |
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Could also be restricted fuel delivery.
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showcrop
Tractor Guru
Joined: 13 Dec 2000
Posts: 7298
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| Posted: Sat Feb 23, 2013 8:42 am Post subject: Re: engine miss firing |
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Sounds like fuel flow restriction. You need a continuous fast dribble. Not for just five seconds but for one minute.
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Jon Hagen
Tractor Expert
Joined: 05 Mar 2009
Posts: 1583
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| Posted: Sat Feb 23, 2013 10:24 am Post subject: Re: engine miss firing |
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Does this have a Rosamaster / Standine injection pump?
If so, a common failure is the plastic governor weight ring. when it fails, plastic bits clog the fuel return on the pump and cause this kind of erratic running. Remove the inspection / timing cover on the pump and see if you have what looks like grains of sand in that opening.
If you do, that will be the same bits of plastic that are clogging the return passage.
Fix this soon, as a totally failed governor ring can make a runaway that could blow up the engine.
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dunseth
New User
Joined: 22 Feb 2013
Posts: 2
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| Posted: Sat Feb 23, 2013 10:41 am Post subject: Re: engine miss firing |
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yes jon this has a roosa master JDB431AL2475 model pump on this 2020 deere.
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