Technical DPF won't regenerate, rough idle and oil consumption

[SunEVO]

Hi

I recently acquired a Fiat Punto Evo 1.3 MJT, with the highest trim level, which i have been looking for for a long time.
One of the hoses going to the differential pressure sensor was faulty when i bought it, casuing it to run in limp mode. I replaced the hose and thought it would all be good. After approximately 200 km it entered limp mode once again due to the dpf exceeding blockage level. Around this time i noticed it used a considerable amount of oil aswell.
I put an OBD 2 scanner on, deleted the fault code and it started regenerating the DPF. I can't seem to understand why it would only start regenerating when it is clogged beyond 100% and i delete the codes.
I am planning to open the engine to see if it salvageable and change the piston rings - would the oil consumption cause the DPF to clog without the ability to regenerate on its own?

Other than this i am experiencing rough idle on startup. I tried changing an injector, which had fault code tied to it, but it changed noting about the idle. The EGR-valve seems to be in good shape and pretty new. I am thinking the rough idle might be connected to poor compression.

What are your thoughts?

Kind regards Sune

 

[The Panda Nut]

Just buy a new dpf. I found main dealer supplied and fitted one for less than eBay part cost. If the old one cleans up keep as a spare. Its not worth messing about with these things in my experience.
I never found dpf made running rough, just SLOW.
Maybe try a fuel additive / cleaner next. It will take time to work though.
Then check injectors.

 

[jackwhoo]

Yes engine consuming engine oil will cause the dpf to clog more quickly than usual.
Investigating why engine consuming engine oil required.
Engine compression check a good idea.

If you can find a good used engine that could be cheaper and quicker than trying to repair your engine.

 

[SunEVO]

Thanks for the replys. I will give an update on what happens.