chug

Hi all, first off let me mention that my knowledge with is are not brilliant! I have a 1999 318i. It has been working fine for over a year but over the past few weeks it has been playing up. When I first use my car and pull away it cannot seen to get much power and starts to chug along, even...

when i use my car on short journeys ,, either turning engine off or letting it tickover as i for instance tonight pick someone up, it chugs like hell on continuing the journey. this happened tonight, after a good blast down the A1 it clears and drives as if its a new car. anyone any ideas before...