Seems obviouse but second opinion needed please.....Vauxhall Corsa cdti 2005.....Starting problems in winter but fine in the summer....Second year in a row the car turns over but takes sometime to start,fine in the summer.I connected jump leads to it from another car for a boost and it started first time so can this be down to a battery fault ie not powerfull enough etc????
Well ..
It's most likely battery .. after 6 years on a diesel I would be looking to replace it.
If youi can remove and check glowplugs with a battery and jump lead .. all the better. When lead connected at battery, glowplug tip should glow brightly within a few seconds.
If no circuit .. it's had it ... Replace all of them.