Hi all I hope you can help, I have a 54 plate 2.0DTI Vectra C. 90k Miles.

I have had an issue with the car starting when the weather is warm... it will basically take ages to turn over and spark into life.

In the mornings it will start up on the first or second turn of the engine,

if its cold and the glow plugs come on, even for a fraction of a second, it will start ok.

However if left for a few hours it struggles to start, and when it is turning over alot of white smoke comes out the back.

I have had all new glow plugs in which helped and told there was no drop in pressure when it was looked at before..

The garage and I are complety stumped...

Has anyone had anything similar??

Cheers for any help you can give.