Anyone else have this issue? Absolutely fine at all other times, but it's lumpy on a cold start until revved or driven off. Also never seems to start as nicely as the mk1 Fabia VRS.

Injectors changed in Feb, Shark stage Obe with DPF delete.

I bet you this happened after the injectors. Exactly the same in my A4 I just sold.

My PD170 is also rougher from cold since the injector change.

It's also is more reluctant to start too, especially now as the temperatures begin to drop.

http://www.briskoda.net/forums/topic/189502-cold-start-problems-with-a-pd-tdi-170/page__st__120__hl__+poor%20+cold%20+starting#entry2796104

Try this one too...

http://www.briskoda.net/forums/topic/197422-vag-170-ps-diesel-injector-failures-vosa-action/page__st__750__hl__+injectors#entry2677317

Thanks guys, will have a look and maybe chat with the main dealer.

The dealers will say its fine and insist it will be mechanical if there is a problem and charge you.

I found a quick blip of the throttle on startup sorted out the worst of the lumpiness. Once I was away and a bit warm it was fine.

I bet you also get a little white smoke and very putrid fumes too. The fumes really made me think twice about the keeping it. I knew there was something wrong with the new injectors but how can you prove it? I told the Audi dealer I thought the cam timing might need adjusting with the new injectors but they wouldn't budge.

Try giving BG244 a try its apparently a very effective engine cleaner removing carbon deposits and alike helping to sort such issues. Give it a google