Cold start problems 1Z

Hello!

The engine of a well-known car model is starting very hard. It takes approximately 20 seconds of cranking to start. It produces white smoke.

Spark plugs, starter, battery are okay.
No oil or coolant leakage.
Error memory is empty.
For one measurement block, the start of injection is within the specified range.

It starts immediately when warm, and otherwise has no problems.

What else could it be?

Best regards.

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