I've had this exact problem on a 54 plate (2005 model) Tid last week, I never had any fault codes appear and I had been kind of ignoring the problem.... I took it in last week and it was diagnosed as a Inlet Manifold problem.
Tiny puff of smoke (water vapor?) when I start from cold now and the engine pulls much better in the low gears, I am however nearly £700 lighter (4 hour job).
Tiny puff of smoke (water vapor?) when I start from cold now and the engine pulls much better in the low gears, I am however nearly £700 lighter (4 hour job).