Follwing a previous thread, I am still having issues with a cold start up in my MK3 tdci. First start up of the day is lumpy with white smoke which settles down literally after 30 seconds.

I have done loads of bits, full service, fuel filter, glow plugs and cleaned EGR/Inlet manifold. There are no fault codes on the engine diagnostic either.

I checked the voltage today, its 12v at the battery fine, 10 at the main glow plug connection and their about 9v at all the glow plugs individually.

In terms of voltage does this sound about right? Im convinced its not an injector issue as performance and mpg is good and it only happens on cold start.

Does anyone have any other ideas!

thanks all