Mazda CX-5 2.2 SkyActiv-D - DPF filling fast

[smartguy69]

Yes, Ford inject just before DPF. Very good system and been around for quite a few years. I was hoping Mazda had similar system by now.

[spektr]

Hm, maybe you are thinking about adblue system, which is similar? If yes mazda 6 2018 and later have this system.

[smartguy69]

Hm, maybe you are thinking about adblue system, which is similar? If yes mazda 6 2018 and later have this system.

Thanks, no adblue on my kuga. I will check out 2018 Mazda.

[koni08]

Hello,

For PM_acc_dsd grow very quick and create problem when resynch with pm_acc.(on highway IS worst for me)

I read in another forum, apparently ECU send order to modify Time of injection, cause the temp of exhaust are too low.

Did u retire the lowest plastic pannel under motor?

[spektr]

Please do tell more

[koni08]

This theory work for me
(Before i try clean EGR, DPF, change joint of injector..)


6th gear 120km/h on highway, got a irregular regulation of temp and lot of irregular DP_DPF
50km average before regen (or 6gr)

200km before regen in 5th and same condition..

sorry for my english

6Th gear at 120km/h - PM_ACC_DSD grow too fast : (50km before regen..)



5Th gear same condition PM_acc_dsd grow normal.. 200km before regen..





Think EXHTEMP1 go too low when low load and "highspeed", cause of too much wind with retired panel under motor.. or something like that?

For this reason, i ask, people with problem of PM_ACC_DSD, did u take off plastic undercover of motor?

Cyaa

[spektr]

Hm, no i didn't remove any plastic underneath. If this theory is correct, then you should change that temp sensor and see what happens.

So what are you trying to say is , if you drive 120khm on a highway with 5 gear, everything is ok, but when you're driving in 6 gear, pm_acc_dsd has a abnormal high value?

[koni08]

Yes behaviour of pm_acc_dsd is normal at 2500tr/min on highway..

On my MZR-CD 2.0 143

Régulation of exhaust Temp are lower and DP_dpf look more stable.

[koni08]

Check yonef reply on end of page 2 of this topic
https://www.mazda3revolution.com/thread ... 714/page-2

[spektr]

Ok, but here the bottom line is about fuel injectors, which could be the case.