[AT] Kubota M5700 noise

[Ken Knierim]

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> 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>
> 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> 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>
>>> 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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