Cold Start problem has anyone had this problem

[ricc]

I've got a clamp metre, but am I looking for the presence of current or some level?

glow plugs should remain on for a bit after the light has gone out... some vehicles they flick on and off whilst the engines cold.. often theres a timing relay and a main relay.... aint had my berlingo long enough to find out whats there.
partially blocked fuel filter can cause problems not letting enough fuel through for a cold start.

its not unknown for glowplugs to be faulty out the box... i had similar with a megane ... bastid to start ..replaced plugs... a little better ... ..........
ive now got a cheap chinese clamp on meter that clips round a lead and gives a (rough) measurement of the current.

think its normally about 10 amps per plug.... but if one or more is drawing nowt thats the duff one ... does your clamp meter measure dc amps some only do ac