COLD START PROBS

[POP]

I have a 1.9 diesel 1999 T Reg, and having probs starting from
first thing in the morning. I have replaced glow plugs and coolant sensor.
I think the only thing left on this system is the glow plug control unit.
Does anybody have an ideas or have this problem ?

[polo power]

have you checked if the battery needs charging or if the alternator is charging the battery sufficently?

[POP]

Thanks for reply. You could be right i'll try recharging battery.
i also noticed that , whist engine was running , there were air bubbles
in the supply line to fuel pump. The engine seems to run ok without
spluttering or misfiring. Whats that all about? I always thought diesel
were supposed to be air free!

[polo power]

there shouldnt be any air in the fuel lines, on the bmw there is an inline filter and pump, to stop this not so sure on the veedubs tho.