Hello all, I recently purchased a used Manitou TMT320 forklift. It was not running when I got it but I have rebuilt the engine and gotten it to work pretty good. A couple of days ago, it started having an issue all of a sudden where it does not want to accelerate anymore. Basically, when it is in neutral I can rev the engine and the hydraulics work as they should. But once I put it in forward or reverse, the engine will not rev up no matter how far I press the throttle. It essentially crawls along instead of driving. Any help would be greatly appreciated.