no pulling power m916 need help

[dbhousemovers]

I purchased a 2007 m916 6x6 to use as a pull truck to move houses. I have had a few 5 ton trucks 65 -72 and they had more power and or torque than this new one has , if you couldn't pull it all the tires would spin and bury themselves. My new truck won't even come close to spinning the tires on dirt pulling a heavy load. it seems to get to half throttle and even out. I do not know if there is a governor or something i can adjust to increase the power or torque. any help would be appreciated.

 

[doghead]

Has the fuel system been serviced lately?

 

[snowtrac nome]

I would suggest changing fuel filters first, you should have a series 60 Detroit in it, they are a pretty reliable engine you may have to have someone with dedac plug into it and look into the electronic controls, see if its derating for some reason,

 

[jcappeljr]

It might be in the computer,if not a fuel problem.My 97 m916 had some issues.The solved them by plugging the truck into a diagnostic computer and changing some things.

 

[dbhousemovers]

k ill start there and change fuel filters , it runs so good without a load , i didn't think about fuel shortage . if that doesn't work ill find someone with a hookup for the computer