[totalizatrs1]

Hi, guys,
I really need your help to figure out which part is broken. So, I have i30 1.6 CRDi 2007. When I accelerate I have too much black smoke. Also sometimes when I accelerate really hard engine choke and turns off. Also sometimes when I start engine it turns off after few seconds and after it’s really hard to start it (but these symptoms does not happen often). So I go to my friend and make a basic computer diagnosis to read errors. And I get these codes:
P0677 – Fuel high-pressure control. Control deviation negative.
P1121 – Fuel delivery control.  Malfunction.
So I think the problem is one of these sensors:
0 281 002 507 - Pressure Control Valve, common rail system
0 281 002 864 - Fuel Injection Pressure Sensor
0 928 400 652 - Valve Unit, common rail system
Maybe someone can identify which of these can cause these symptoms?
I would be glad if you can help!

[Asterix]

Hi totalizatrs1

 

Sorry to hear about your troubles.

Have you tried to Google the fault codes..?  Maybe someone have had same error...

[Dazzler]

  totalizatrs1

Have you had the car long? Do you know the history of the car? Sorry to hear of your troubles...

May be worth flushing the fuel system and putting in a new fuel filter with fresh fuel and a diesel injector cleaner?

[totalizatrs1]

Asterix: I already try it but no results. ;/

Dazzler: I have this car for 6 months, and I changed oil, fuel and air filters, also add this injector cleaner, and check injectors and it's work great. It could be only one of these three sensors. ;/


P.S
Thank you for the answers!

[cruiserfied]

Don't start guessing at sensors being the cause. It might be, but don't get too hasty. There are a number of components related and guessing will get extremely expensive. I can tell you right now a rail pressure sensor is well over $1k as it is normally only available with the rail.
I am curious as you said you have checked injectors? How was this done? CRDi testing requires speciality equipment.

I highly recommend getting your dealer to assess the concerns.