Vibrations and white smoke after start, AAZ engine

Hello everyone,

I'm having the following problem with my AAZ:

The engine starts perfectly.
After starting, there are initially no noticeable abnormalities when the engine is idling.

However, when you accelerate, the engine vibrates and runs "rough." Additionally, white smoke comes out of the exhaust. The problem disappears at high RPMs, estimated to be around 3000 RPM.
After a short warm-up period, the problem disappears completely at all engine speeds.
However, it worries me.

LiquiMoli's "fuel injector cleaner" didn't do anything.
I've now removed the fuel injectors and can't see any obvious problems with them.

Consider adjusting the nozzles for better pressure. However, everything at Bosch tends to be expensive, and I want to avoid wasting money on unnecessary purchases.

Do you have any ideas about other things we could try?

Thank you and best regards.

Bernd.

Okay. Now I was thinking about an old KY engine (the AAZ is in a T3...), which is still in the barn, and maybe I could install its injectors.
However, they open at 130 bar instead of 155 bar.

However, my original problem seems to be solved.
So, it seems there is indeed a problem with the original nozzles.

I can't let those from the KY stay in, right?
I'm observing a higher idle speed and a slower "engine braking" effect when releasing the accelerator.

Sure, here's the translation:

"Just Google 'Henzo' or 'Dieselsend'."