Lack of power on first start up.

[tony rodaway]

My car when left over night and start in the morning will struggle to start as in dieing battery symtoms but my batterys are both good.
I started my car today and with lots of white excess smoke as more than normal so let it run for a bit then left for a few hrs but then same again with excess smoke but has a strange strong smell as different to normal my starter and alternator are both good and have even checked my earth with multimeter test .
I have done the parasitic draw test on my ground wire and was 0.3 draw so that was ok.
Just thinking with excess smoke it may be a sensor or glow plug or but would either of these cause my symptoms.

quick up date if this happens to you as i checked both batterys and both yes both read 12.6 on my multi meter but here is the catch i got told to clean my terminals as connections seemed loose on my passenger side battery as this is the main battery that starts the car.
I decided to swop batteries over and found that the auxiliary battery was dead as a door nail even tho when connected to the main battery read 12.6 so got a new battery and problem solved by accident.