[AT] Kubota M5700 noise

[Cecil Bearden]

How many engine hours is showing??
Cecil

On 4/4/2020 7:22 PM, Dave Maynard wrote:
> Have already switched injectors, replaced one, no change. Now replaced 
> all the injectors yesterday with new and new cups on the bottom as 
> well. Running a 20-50W synthetic and oil has been changed twice along 
> with the filter. Same oil I've always run in my Chevy Duromax since it 
> was new and have 300,000 miles on it and never done anything to it.
>
> Dave M.
>
> On Sat, Apr 4, 2020, 7:19 PM Cecil Bearden <crbearden at copper.net 
> <mailto:crbearden at copper.net>> wrote:
>
>     How many hours?  What oil are you running? I have had Perkins that
>     sounded very similar and they ran forever...
>     Cecil
>
>     On 4/4/2020 5:24 PM, Ken Knierim wrote:
>>     Can you swap injectors and see if the noise follows the injector?
>>     Or crack the injector fitting while its running and see if you
>>     can narrow it down, like pulling a plug wire?
>>
>>     Ken in AZ
>>
>>     On Sat, Apr 4, 2020 at 2:53 PM Jason <dejoodster at gmail.com
>>     <mailto:dejoodster at gmail.com>> wrote:
>>
>>         I would pull the injector on the bad cylinder at least and
>>         have the pump shop check it.
>>
>>         Jason
>>
>>         On Sat, Apr 4, 2020, 3:43 PM Dave Maynard
>>         <dave at themaplehillfarm.com
>>         <mailto:dave at themaplehillfarm.com>> wrote:
>>
>>                  I have listened with my stethoscope and it sounds
>>             like the rear of the engine, probably cylinder #5. My
>>             farmer neighbor listened with a long socket extension and
>>             he thinks it's more forward maybe #2 or #3.
>>                  The pump was taken to D&W Diesel and tested and they
>>             say all is good with it. I dont know how to check pump
>>             timing, or what could make it change. And if so, why only
>>             one cylinder? All the pump cam lobes showed no wear and
>>             looked good.
>>
>>             Still stumped.
>>             Dave Maynard
>>
>>             On Sat, Apr 4, 2020, 3:52 PM Moe Fretz
>>             <tubetester at gmail.com <mailto:tubetester at gmail.com>> wrote:
>>
>>                 typical noisy Kubota diesel.
>>                 Possibly injection pump timing.
>>
>>
>>                 $-------&
>>                 Moe Fretz
>>
>>                 L'Orignal
>>                 Ontario, Canada
>>
>>
>>                 On Sat, Apr 4, 2020 at 3:10 PM Dave Maynard
>>                 <dave at themaplehillfarm.com
>>                 <mailto:dave at themaplehillfarm.com>> wrote:
>>
>>                     Hi everyone, got my 1st non antique non red
>>                     tractor this summer. Kubota 62 horse 4wd. Nice
>>                     shape overall and a good price. However it makes
>>                     a noise that seller said dealer told him it was a
>>                     lifter adjustment, but it turns out not so. We
>>                     have had this engine apart several times and cant
>>                     find anything wrong, bearings are all good, no
>>                     broken rings, out of spec bores, pistons all good.
>>                     At odds trying to figure this out, and dont want
>>                     to destroy this engine by running it too much.
>>                     Just yesterday, replaced all the injectors and
>>                     cups with new as the sound is like a bad
>>                     injector, but to no avail, noise is still there.
>>                     The engine is an F2803 5 cylinder which seems to
>>                     be not as common as most.
>>                     Does anyone know of any
>>                     Reputable dealers for used engines?
>>                          I have attached a link to video where you
>>                     can hear the noise. Any and all suggestions and
>>                     comments welcome.
>>
>>                     https://youtu.be/pMxOofbbJOA
>>
>>
>>                     Thanks guys,
>>                     Dave Maynard
>>                     The Maple Hill Farm
>>                     Marion, NY
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