2005 Kioti CK25 Gear - rough start

[CK25]

I have a 2005 Kioti CK25 Gear model with 1000hrs on the unit (owned since new). The last year or two I've noticed a stumble when the engine is cold. This video was captured when outside temps indicated 28' F. Not sure whether this could be a glow plug or injector issue. Once the tractor warms up then the stumble smooths out and does not return at operating temperature. I have captured a video below for illustration purposes

 

[Billrog]

Just guessing possibly cold summer fuel until it circulates in the tank and warms the fuel up.

 

[Robin Veerman]

Get some fresh fuel and add a dose of Cetane boost. I’m sure you’ll notice the difference. I like the Amsoil additive. Order it online….easy peasy.
https://www.amsoil.com/p/amsoil-diesel-injector-clean-cetane-boost-ads/?zo=331384