[AT] Kubota M5700 noise

[Cecil Bearden]

Does this noise start immediately or after it is run a bit.  It could be 
carbon buildup on the head or piston.  This would increase compression 
and also if it was glowing it could cause pre-detonation.   Another 
thought.  Is it possible that the pre-combustion chamber is moving in 
its recess?   This is a one time click along with the injection it seems.
Cecil

On 4/5/2020 9:42 PM, Roger Moffat wrote:
>
>
>> On Apr 5, 2020, at 9:59 PM, Dave Maynard <dave at themaplehillfarm.com 
>> <mailto:dave at themaplehillfarm.com>> wrote:
>>
>> Have cracked injector lines one at a time, and it gets quieter on #5
>
> But only on #5?
>
> When you crack the others the engine misses, but the noise remains?
>
> I wonder if something about cylinder 5 is somehow different so that 
> the compression is higher, and so it’s igniting (pre-igniting) too 
> much before top dead centre in just that cylinder?
>
> Eg #5 piston slightly higher than the other 4?
>
> Roger
>
> _______________________________________________
> AT mailing list
> AT at lists.antique-tractor.com
> http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.antique-tractor.com/pipermail/at-antique-tractor.com/attachments/20200405/c453d787/attachment.htm>