I can not go from 6000 feet, the speed drops below 60 knots, I've tried all the settings propeller, mixtura fuel and ice control (following the specifications). In summary, the engine loses power!I need help ...

A link on this forum about this issue, but the H key did not work in my case.http://forum.avsim.net/topic/285168-losing-power-at-relatively-low-altitude/