hi all, looking for some help on a yale GDP 25VX, its a 2011 model and its struggling to rev up, it will rev slightly then just sound like its hunting for fuel. its not the control between the foot pedal and throttle actuator as that's working fine, I have done the obvious and changed both fuel filters but still the same, everything is pointing towards injection pump possibly but before i go stripping that down is there anything else to look for / any common problems with this machine

Many thanks

Matt Broady