Diesel in Engine Oil

Faults and Technical chat for the Mazda CX-3
mickydan6
Posts: 3
Joined: Thu Oct 28, 2021 3:31 pm

Post by mickydan6 »

I wonder if anyone can help or point me in the right direction. I have a CX-3 1.5 DIESEL....75k on the clock. I had to get a new timing chain replaced as well an oil change then ever since then the DPF light has been on....I have taken it back to the garage about 6 times, I have had the DPF cleaned & flushed but it still keeps coming back on? They have done an engine regen then the light goes out but after about 50 miles its back on again....anyone else had the same issues? It really has put me off the car.

Bconstantine94
Posts: 1
Joined: Wed Jan 26, 2022 10:42 am

Post by Bconstantine94 »

anchorman wrote: Fri Jan 19, 2018 6:45 pm
DaveG wrote: Fri Jan 19, 2018 2:17 pm Anchorman that is interesting not sure how it works, if you have time can you explain more thanks.How do you start the process although I appreciate my CX3 is petrol and doesn't apply.
It’s quite easy to initiate using the same test point in the fuse box that is used for resetting the oil data. It should really only be done if the DPF light comes on as a result of the normal automatic regens fail to work. It’s slightly scary as the car ”goes off on one” and the neighbours won’t thank you for it. It should not be interrupted once started.

I can post a pdf but I don’t really want people dabbling. I prefer to email it if you want to pm me with your email address.
could you send me the pdf on the process for the dpf i have the same problem ! thank you Vasilis
Lukad45
Posts: 1
Joined: Tue Mar 07, 2023 11:58 am

Post by Lukad45 »

Hey, I am also from Croatia. I bought Mazda CX-3 1.5d (2015) less than a week ago. It has around 109 000 kilometers. The day after I bought the CX-3 check engine light came on. Went to service and they told me that the problem is in frequent regeneration and that it needs new injectors (which are around 2 000€-2500€) and today dpf light started blinking. Mazda said that when dpf light starts to blink that the car would not perform any regeneration and if we continued to drive the car it would neeed new dpf filter. I see that one post here is from croatian guy so I would be glad to know what did you do or anyone else.
Percy247
Posts: 144
Joined: Sun Nov 10, 2019 4:08 pm

Post by Percy247 »

Are you sure you need new injectors? Have Mazda confirmed that the injectors are damaged and not spraying properly. Do you believe them? Sometimes you can get reconditioned injectors for €150-200 but then they need recoding at Mazda dealership.

After less than 100,000Km these engines and their intake and emissions systems are full of soot. This can cause blockages in the manifold, the egrs and sensor errors. I would hate for you to spend €2000+ for the problem not be the injectors! I would try and find an injector specialist to test the injectors. They will give you an honest answer and not just encourage you to buy 4 stupidly expensive new injectors. They may also be able to get reconditioned injectors for you
2016 Mazda 2 Sport Nav 1.5 Skyactiv Diesel.
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