Hello was wondering if anyone had any idea what would make my dump truck pull weak, it has the 500hp n14 with 18spd tranny, and compared to my other dump with 460hp n14 with 8ll it want keep up, will hardly keep up with some of the trucks that are way more underpowered , any suggestions? Thansk
whats the boost peak at under load?
Could check the fuel filters. If there clogged it will loose power. It's amazing the difference new filters makes.
Put another way, your boost gauge and air filter minder are diagnostic tools. You should be making more than 30 lbs of boost with that engine. Filters are always the place to start, but your air-to-air could be leaking, your fuel pump might be weak or fuel lines are restricted, might have a bad sensor.
Are you pushing any smoke out the exhaust under a heavy load. If so, what color is the smoke. When was the last time you changed your fuel and air filters? What is you turbo boost (30 psi?). When was the last overhead ran on it? Are you getting full throttle (if you are hauling aggreate, I seen materail under the pedal which limits the throw of the throttle). What year is the engine (ISX engine I assume). If so, is there a engine warning light on? Did you hook up insite to it.