NAMIKI

Around 200.000 km oil level light warning appeared. Noticed oil on Turbo hose and repaired both turbo's. After running the car 50 km, engine stopped during rush hour and had to try 40 time to start again. Service tested the car and said all the injectors needed to be replaced due to the bad fuel. I replaced eigth of them but there is still an error on 7th injector although it is brand new.
I checked pressure level of all the pistons, looks OK
Tested cabling (sensors etc.), looks OK
Any hint may help me solve my problem
Thanks in advance