Hi, i have a citroen c5 estate 2003 hdi. when i i leave the car for a few hours or more it starts 1st time but it has no power when i try to accelerate. This happens for the 1st 5 minutes of the drive and then all of a sudden the power will come back. This has been happening for about a month now. I have put a new battery on and glow plugs. Can any one help me get to the bottom of this please?