Originally Posted by Joe Fabulous
Sounds feasible. The cars been stood on the drive for the last 4 weeks.
DPF's regenerate every so often to burn the particulate matter that they filter from the exhaust gas. to regenerate they (usually) burn off the particulates with a combination of fuel and high temp exhaust gas. you need high engine speeds to get the gas at a higher temp hence a blast on the A1 suggestion.
On the other hand, these regens convert the PM into ash, and a DPF has a maximum ash capacity. hence it may need a clean from time to time (not a big deal).
DPF's are a relatively new technology and are generally a fucking nightmare like.
Could be various other things though -at a guess maybe a fuel pump. You need to go to a dealer marra.