Opel Vectra B does not start but take it in 2 days

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I have a problem that is already touching my noses .... it turns out that if I take it day by day there is no problem, but if I stop it a couple of days or more, it is hard for it to save a barbarity or does not start, and a smoke is a paga. I just changed my injection pump and remains exactly the same. What can I do? It is 130000km and 10 years.
Many thanks for everything

Possibly you have an air intake in the diesel duct, you would have to find out if when the diesel tube is not launched it looks full or with air bubbles.

Those cars are downloaded from diesel and more if it is a 2000 cc. It has an anti -relationship valve between a sleeve that comes out of the filter to the diesel pump.

In my opiñon it cannot be air because Zion would not have to smoke, I advise you to try the injection point or change the nozzles of the injectors.
but the other one that can be is the preheating timer of the cold heater