As I wrote in my previous blog entry - my RTD broke down.

Фото в бортжурнале Nissan Cedric (5G)

So, while I was looking for the cause of the breakdown, I removed the pump with injectors and took it to a stand for testing and preventive cleaning.
The nearest stand from my location at that time was in Viazma, Smolensk region."Auto Doctor" service stationin the town of Viazma, Smolensk region.
I came there, they tested the injectors on the stand and cleaned them with a special solution in an ultrasonic bath.

Фото в бортжурнале Nissan Cedric (5G)

I did this procedure more for preventive purposes or as a side effect since I had already removed the injectors anyway.
This was my fatal mistake…

Confidently installing the injectors in their original place after cleaning and fixing the RTD issue, I drove off to Minsk with full confidence in the car's integrity (a small photo session in Minsk will be posted later).

The car ran excellently; overall we covered 800 km to Minsk and two days driving around Minsk.
Nothing foreboded any trouble.
But after parking the car again for the night, I couldn't start it up the next morning. The car would start but barely drive or wouldn't start at all, then it would die out if started.
I looked at the spark plugs: sometimes they were flooded and sometimes clean.
I quickly drew a conclusion: flooding means RTD issue again.
To understand — breaking down on a right-hand drive car in Belarus is almost like death. Parts take long to arrive (even domestic ones), there are almost no specialists for Japanese cars.

Фото в бортжурнале Nissan Cedric (5G)

In general, over the next three days I was busy identifying and fixing the malfunction — changing RTD, changing fuel pump, cleaning fuel filter, checking fuel dampers and so on…
A lot of money, nerves and time were wasted!

Фото в бортжурнале Nissan Cedric (5G)

Summarizing:
The car wouldn't start. Towing to Smolensk byMishafromM-Pro Garage
The diagnosis was quickly made: the faulty injectors causing trouble are failing to maintain pressure and 'flooding' cylinders. The engine dies out due to an overly rich fuel mixture.

To my amazement, I was completely sure that at least the injectors should be fine; it never occurred to me they could cause issues. It turns out Japanese injectors must not be cleaned with ultrasonic waves — lacquer cracks on the coil windings and after a couple days of work, short circuits occur.
I can't figure out why the guys from Auto Doctor didn't warn me about this possibility. One can only speculate whether it's low professionalism or plain laziness? I've personally encountered problems at this service station before — if anyone in Viazma is reading my blog — steer clear of that place, they won't just fail to solve your problem but might actually cause more harm.

Temporary solution to get me to Moscow — removing the RTD and installing a makeshift 'choke' for pressure regulation.
The car started, but idle needs constant gas to prevent fuel from flooding into the spark plugs due to excess buildup in return lines.
Thanks to guys from M-Pro Garage, especially Misha, for quick diagnosis and temporary fix. They even upgraded me with a set of front dual headlights from Nissan Gloria as a gift so I left with more than just my car fixed!
Highly recommend this place as highly specialized on Japanese cars! Rumor has it they are almost the only ones in Smolensk with advanced specialization for Japs!
I drove home like that.

At the scrap yardDingoin Moscow, I found replacement injectors from RB20 motor of a later model Nissan Gloria.

New injector compared to old one (new one has green ring and pink connector):

Фото в бортжурнале Nissan Cedric (5G)

Фото в бортжурнале Nissan Cedric (5G). Запчасти на фото: 1000008

Installed — car runs without issues.

Conclusion: only clean injectors with pressurized solution, no ultrasonic waves! I paid for my ignorance in rubles — learn from my mistake!