206 gasoline lpg problem

friends 2004 I have a 206 xt 1.4 vehicle I bought the vehicle in May 2010, I also had an attic line system lpg in 2011, the car started to distract after a while, my car started to work by making noises when the engine was cold & nbsp; they said there was nothing, I last looked at the brain, the format was thrown & nbsp; calibration was corrected, the same problem started again after 2 months & nbsp; I have been using it for a while, the car is working normally when the engine shows 30 degrees. help, tired, get out of the car, if there is a place you know please advise & nbsp;