Thomas T133

[T133]

Hi guys I have a Thomas T133 skid steer (kuboto Diesel engine)and it worked perfect for clearing snow all winter, today I went to use it in the hot weather to level the ground for a patio and it worked perfect for almost 45 min then when I started to push the machine a little harder it would hesitate and stall out. It starts right up again and it would run and idle and if I started pushing the dirt or loading the machine it would start to hesitate and start chugging like it wanted to stall again or it would stall. I shut it off and drained the fuel from the tank and gave it fresh fuel and when it first started it ran perfect again until it gets hot after now maybe 15 minutes. If I shut it down and leave it cool down for a bit... It will work perfect and if I just scrape the ground it seemed to be fine but when I start to load up the machine by pushing dirt or making it work harder then again it wants to stall out ... The best way I can describe it is ...it suddenly starts to loose power and idles lower and lower until it stalls. If I play with the throttle I can keep it running but it's still jerking and hesitating... Or it might stall. It started to cool down with a slight bit of rain and the machine actually ran better but eventually again when I started to push the dirt around and make the machine work harder it again wanted to stall out. Seems if the machine is cold it doesn't have a problem but when it heats up it wants to die out. Any thoughts or ideas here for the experienced? To me it seems like it might be a fueling issue?

 

[SkidRoe]

To start with something simple, have you tried changing the fuel filter?
I don't see how that could be in line with the temperature related problem you describe, but it is somewhere to start.
Ignoring the temperature dependency, I have had diesel tractors act similar to what you describe when the fuel filter became plugged.
HTH - SR