my truck has a miss
 

it feels and sounds like its got a miss but it smooths out in the higher rpms. i think one of the cylinders aint getting fuel but i aint sure. any thoughts?

check for fuel leaks... mine was leaking between the frame and the fuel tank. sounds like air to me. any white smoke?

no white smoke. no fuel leaks. i already cleaned the injectors and fuel lines. new fuel filter. it just fuels up high and not in the low rpms. the only thing i aint touched is the pump.