Hi all, wonder if could I ask you experts for a bit of advice!

I've got a Mazda 6 2.2 Skyactiv diesel. The car has had repeated problems with oil pressure apparently from fuel/oil mixing. The initial solution was a fuel injector change and oil flush. The problem has now recurred in the form of an engine warning light. My local garage tells me that the issue is now with the DPF and I should find a specialist garage.

The car has 105kmiles on the clock so I don't want to go down an expensive rabbit hole.

I understand that this is a common problem with this model. Is any one familar with this? What is the best course of action here?

 

The DPF light can be triggered 2 ways. A blocked DPF has been detected and requires the burnoff procedure to take place. This can be done driving or with a good scantool. The blockage percentage can be viewed on most good scantools. If it can't be unblocked ultrasonic claning may be an option. The other trigger is a calculation of driving factors like cold starts etc basically telling you it's theoretically reached it's maximum acceptable fuel/oil dilution and it's time for an oil change. Again a good scantool can reset this event. By the way it's not just a common to Mazda it's all cars with a DPF.

 

Davemere welcome to the forum

 

Thanks Callisto

 

Does the vehicle do a lot of round town driving?

These SH 2.2 engines are troublesome.

The oil pressure needs to be measured at varying RPMs with the oil temp over 80`c.

These engines are common for oil dilution from fuel wash ( DPF Regen) and also combustion gasses leaking past the injector seals, which causes rapid build up of carbon in the engine blocking the oil pump build up and accelerating engine wear.

Was only 1 injector replaced? Did they check all injectors? Did they replace all the injector seals at the same time?