If you notice that regen has started (high consumption, exhaust noise, i-Stop engine indicator), just downshift a gear or two. When engine revs over 3000, regen is done in less than 5 minutes.
Jukkeli
Hi Sternchallis, I thought the same as you 3 years ago, but after learning more about this SkyActiv-D engine, I found (don't have the documentation link now) that when you perform a Manual Regeneration (forced), that takes around 1 hour, by procedure you have to change the oil.
If I remember well, when you do the Force Reg (ie from Forscan app or other tool), the Oil Diluted PID will go to +100 grams. Note that in average, for a Automatic Reg it will increase by 2-3 grams and then will decrease by 2-3 grams after 60-70 km. Therefore a Forced reg it's equivalent with 10k km dilution (considering an avg of 200 km per reg)!
If you ask on other people experts on this engine (also on ForScan forum), they all will tell you that you need to change the oil in order to avoid issues with the oil pump and oil presure.
After you do a forced reg, that last 1+ hour, you need to change your oil as will be very diluted
I had problems with this sensor (P0154 A/F), as the value was out of range. Maybe because of the soot, oil or all the soap/acid I purred onto DPF from the upper presure ingress tube.
I bought the original one from Denso from Ebay, about 130 Euro, replace it and all worked. (DENSO DOX-0589)
If I remember well, the PCM ECU module measures how fast the sensor in Ohm reacts to other values (temp, load...) - at 800 rpm it should be 2.4 Ohm
The Skyactiv-D 2.2 engine has only one O2 sensor that acts as the Lambda sensor, but the converging loop mechanism is similar.
Agree, you can do it in 10 min using a 10mm key
I don't see the dp_dpf value, but please also note that its value is significand right after the regeneration finish and before it begins, so you can benchmark the level of fill.
Also to be more precise, at still, rev the engine at 2000 rpm and 3000 rpm in both scenarious to have a good overview of the DPF.
Note that values bellow 2kPa at 3000 rpm after the regeneration usually means a relatively yet clean filter.
What I don't understand how come you have an average of 192 km (70k miles/581 regs)
when I had around 220 km per regeneration around your same engine mileage.
I did already 20k km in 9 months and I love it!
Now even more with the ECU remap that is more reactive at low speed
I have your exact model.
You consume 6.7 l/100 km, wow!
So I don't think you have any issues with the injectors.
I have an everage of 7.5 if I drive nicely on city/extra-urban/high-way and 8.4 if I drive more aggressive.
You should check in general:
- oil level (with the stick in the engine bay) not to go above the max indicator
- dilution PID
- differential dpf pressure (DP_DPF) that is 0.1-0.3 kPa at idle 800 rpm after the regeneration
How many km your car have?
Also, how fast is your car 0-100 km?
I remapped the ECU last week and I did 8.5 secs but I don't know if this is good or not 🤔
I suppose you used Module 10 from PCM?
Module 10 for PCMflash |ECUtools.eu
ecutools.eu
Wow, can you please share a picture with what connectors you un-pluged ? 😅
The protocol is KessV2, you'll need the correct .bin file from some sites, costs around 25 euro.
Then you need the Kess HW to connect via OBDv2 to backup and write the new firmware with the correct checksum and signed certificate, that costs around 100-150 euro.
Since I didn't want to risk, I payed 300 euro to a shop near Milano to apply this remap for me (EGR off + extra 20 hp)
I just did a test today and the 0-100 km/h went from 9.7 secs before to 8.5 secs
Note that the car now has 135k km and the Mazda factory specs are 9.4 seconds.
Hi @tv how to check that the EGR is disabled?
I just did the EGR disable by doing a ECU remap but in ForScan app I still see that the EGRP_ACT PID is sometimes 50%... 🤔
Ciao @tv86, look at post #105 so you can have an idea.
Also, what engine you have?
Also, after having acceptable regenerations values (200-240 km), now after 10.000 km, the distance dropped again to 100-120 km.
So I will try the Xenum In & Out product and then, if does not helps, I will remap the ECU in order to "almost" disable the EGR.
Another forum user, with the same engine went from 100 km to 180 km with only disabling the EGR valve.
I found this shop near Milano-Italy that they:
All for for 500 euro
Also, what engine you have?
Also, after having acceptable regenerations values (200-240 km), now after 10.000 km, the distance dropped again to 100-120 km.
So I will try the Xenum In & Out product and then, if does not helps, I will remap the ECU in order to "almost" disable the EGR.
Another forum user, with the same engine went from 100 km to 180 km with only disabling the EGR valve.
I found this shop near Milano-Italy that they:
- do the ECU remap in order to use EGR very little or 0%
- check & calibrate the injectors
- increase the power by 10%
- do the HP test before and after
All for for 500 euro
From my findings, having the DP_DPF value bellow 5-6 kPa for 3000 rpm (bot after and before regenerations) means that the DPF is relatively clean.
In my case the DP_DPF values after the reg is quite low at Idle (0.2 kPa) and at 3000 rpm is around 6 kPa.
But before just the regeneration, the DP_DPF are 1.2 kPa at Idle and 25 kPa at 3000 rpm.
Therefore my DPF is not completely clotted, but also not very clean, as I hardly arrive at 150 km between regenerations.
In my case the DP_DPF values after the reg is quite low at Idle (0.2 kPa) and at 3000 rpm is around 6 kPa.
But before just the regeneration, the DP_DPF are 1.2 kPa at Idle and 25 kPa at 3000 rpm.
Therefore my DPF is not completely clotted, but also not very clean, as I hardly arrive at 150 km between regenerations.
Gracias @javier.g , I will do a dpf reset using the usb adapter and the Windows version of Forscan.
I see that your values are quite good to be at almost 300km and not right after a regeneration.
After the cleaning I did not do a static regeneration but it did a automatic one on the road the next day, a lot of white smoke went out.
@Percy247 , the dpf is not a option for me because of what javier said...
I see that your values are quite good to be at almost 300km and not right after a regeneration.
After the cleaning I did not do a static regeneration but it did a automatic one on the road the next day, a lot of white smoke went out.
@Percy247 , the dpf is not a option for me because of what javier said...
@javier.g I believe I have a similar engine as yours (2.2 D 175 hp from 2016).
My car has 127k km and I use it for mixed roads. In the last 2 years the reg distance went from 300+ km to less than 80km to till now I tried different things. I still have to understand the cause but I suspect on of these 4:
1. non-Mazda service put wrong oil
2. I put the Premium Diesel for 2 tanks in July this year (shame on me) because it does not help the Skyactive D engine
3. The DPF is close to it's end of life (ash filling that is not burned by the regenerations)
4. Many in town driving due to Covid restrictions
The actions I did after it are the following:
1. Cleaned the carbon from the intake/EGR/MAP at Mazda Workshop (it improved the engine response and power)
2. Did a 3000+ km trip mainly highway and I was able to see only once 300 km between regenerations
3. Used the STP Diesel additive for the DPF cleaning - it helped to increase maybe the reg interval to 100-110 km
4. Used hydrogen intake cleaning - it reduced the consumption average from 9 l/100 km toward 8 l/100 km (example: at 90kmh it shows 5.2-5.3 l/100) but I did not improved the regeneration intervals
5. Used the Wurth DPF cleaner - it works by spraying it trough the input DPF pressure tube: it improved the reg interval to 150 km in average
6 Did a more complex cleaning of the DPF at home without removing using 3 step cleaning for both soot and ash, as the first needs a detergent (pH basic) and the second needs an acid (pH acid) that I was inspired from this guy ttps://www.youtube.com/watch?v=Vsicb0LsIiQ , using a pressure gun with the liquid can where I sprayed in the DPF in sequence (2 L of 50% dishwashing liquid, 2 L of 10% caustic soda, 4 L of clean water, then 2 L of NaCl 10% acid and other 4 L of clean water as final step)
Now I have 150-200 km regeneration distance in average but I want to understand it the cause can be the injectors or other (DPF/EGR).
My current ForScan DPF values (DP_DPF pid) after a reg are:
May I ask you please what are your values right after a regeneration?
As my only concern is the 3000 rpm value, because if this is a good reading, it means my DPF is good and I have to look elsewhere for the DPF Fast Filling problem ...
As for other guys who changed their injectors and still have less than 100 km interval between regs, I strongly suggest you to clean professionally the DPF by removing it and remounting it, especially if you have 100k + km onboard as the car must do between 250-400 km depending of the driving style.
My car has 127k km and I use it for mixed roads. In the last 2 years the reg distance went from 300+ km to less than 80km to till now I tried different things. I still have to understand the cause but I suspect on of these 4:
1. non-Mazda service put wrong oil
2. I put the Premium Diesel for 2 tanks in July this year (shame on me) because it does not help the Skyactive D engine
3. The DPF is close to it's end of life (ash filling that is not burned by the regenerations)
4. Many in town driving due to Covid restrictions
The actions I did after it are the following:
1. Cleaned the carbon from the intake/EGR/MAP at Mazda Workshop (it improved the engine response and power)
2. Did a 3000+ km trip mainly highway and I was able to see only once 300 km between regenerations
3. Used the STP Diesel additive for the DPF cleaning - it helped to increase maybe the reg interval to 100-110 km
4. Used hydrogen intake cleaning - it reduced the consumption average from 9 l/100 km toward 8 l/100 km (example: at 90kmh it shows 5.2-5.3 l/100) but I did not improved the regeneration intervals
5. Used the Wurth DPF cleaner - it works by spraying it trough the input DPF pressure tube: it improved the reg interval to 150 km in average
6 Did a more complex cleaning of the DPF at home without removing using 3 step cleaning for both soot and ash, as the first needs a detergent (pH basic) and the second needs an acid (pH acid) that I was inspired from this guy ttps://www.youtube.com/watch?v=Vsicb0LsIiQ , using a pressure gun with the liquid can where I sprayed in the DPF in sequence (2 L of 50% dishwashing liquid, 2 L of 10% caustic soda, 4 L of clean water, then 2 L of NaCl 10% acid and other 4 L of clean water as final step)
Now I have 150-200 km regeneration distance in average but I want to understand it the cause can be the injectors or other (DPF/EGR).
My current ForScan DPF values (DP_DPF pid) after a reg are:
- 0.2 kPa at Idle (800 rpm)
- 0.9 kPa at 2000 rpm (car stopped in Parked mode)
- 4.9 kPa at 3000 rpm (car stopped in Parked mode)
- 1.2 kPa at Idle (800 rpm)
- 9 kPa (circa) at 2000 rpm (car stopped in Parked mode)
- 25 kPa at 3000 rpm (car stopped in Parked mode)
May I ask you please what are your values right after a regeneration?
As my only concern is the 3000 rpm value, because if this is a good reading, it means my DPF is good and I have to look elsewhere for the DPF Fast Filling problem ...
As for other guys who changed their injectors and still have less than 100 km interval between regs, I strongly suggest you to clean professionally the DPF by removing it and remounting it, especially if you have 100k + km onboard as the car must do between 250-400 km depending of the driving style.
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