DPF Cleaning

AlanWatts

I'm looking at getting the DPF cleaned/reconditioned in a 2015 Mazda3. Has anyone had good experience with this in any make/model?

Would prefer someone in Cork ideally if anyone can recommended but want it done properly so would travel if necessary. Anyone use DPF Clinic in Limerick before?

Thanks

User1998

I don’t think anyone has ever had a good experience with that make and model

Raichų

no expert but DPF cleaning is hardly an exceptionally difficult job that requires specialist expertise or that? Surely your local mechanic can do that for you?

User1998

https://www.boards.ie/discussion/comment/123332101#Comment_123332101

Its definitely a specialist job. A regular mechanic can only do forced regenerations. To clean the DPF it needs to be physically removed and placed in a DPF cleaning machine. Only DPF specialists have those machines.

Whocare

Might be worth taking it to this garage Specialise in mazda going by Facebook/YouTube contain looks like he knows what he doing

goochy

Cork engine Centre we got it done recently in job but too early to say if it ' done the job '

Raichų

https://www.boards.ie/discussion/comment/123332113#Comment_123332113

ah fair enough- I had a filter replaced by a local garage some time ago on a civic but I am guessing that DPF & diesel filter is not the same then!!

AlanWatts

Thanks Lads

zg3409

What age what mileage? Who recommended cleaning? If high mileage and dog is full of ash cleaning won't help. If engine is smokey cleaning won't help. You are supposed to get a new dog at say 160,000km.

Have you errors on dash? Do you have error codes? Often sensor tubes go brittle and break and cleaning won't fix these. You need a proper diagnosis ideally by driving car and monitoring sensors and ideally driving 500km and seeing car go through a real regeneration and see if it passes and how long between regenerations. No cleaning company gives guarantees for a reason.

AlanWatts

https://www.boards.ie/discussion/comment/123333125#Comment_123333125

Its 2015, 125K KM, its a red low oil pressure warning. We were up the country when it happened. We called breakdown guy who said the computer he hooked up was saying engine was fine. We brought it to a local guy who said there was diesel in the Oil which was slightly high. They emptied and replaced with new oil. Light came on again about 100KM when almost home. Checked oil myself and it reading high. Reason I'm asking about DPF is I met 2 people recently same vintage Mazda Diesels and they needed engine rebuild cos of DPF pressure.

ofcork

Cork auto services did mine a few years ago they couldn't regen it so took it off and sent it away to be cleaned cost 950 at the time has been fine since.

fatbhoy

https://www.boards.ie/discussion/comment/123333125#Comment_123333125

If high mileage and dog is full of ash cleaning won't help.

DPF cleaning is exactly for cleaning out this ash, is it not?

You are supposed to get a new dog at say 160,000km.

Where are you getting that information from?

fatbhoy

I'm interesting too. My 2016 Caddy is doing a regen too frequently for my liking: every 150km - 200km. When I discover it starting a regen, I take it to the M50 for about 20 mins at 1900RPM till the regen stops. I'm beginning to think it needs cleaning. No DPF warning light at all. 180,000 KM. I haven't ran any diagnostics (VCDS) yet.

I see DPF Doctor (franchises all over Ireland) or the guy in Glasthule seem good at diagnosing and cleaning.

youtheman

https://www.boards.ie/discussion/comment/123332244#Comment_123332244

I would second this recommendation. I took my Mazda CX5 2.2D to him as it was experiencing carbon build up in the inlet manifold (a known issue with this type of engine). He is the absolute 'guru' in anything to do with Mazda engines. If you look at his YouTube channel you can easily see that he knows what he's at. Even give him a WhatsApp message, he will be able to advise you.

testtech05

Sorry to hijack but does anyone have any recommendations for someone in the Galway/Mayo or general west area who specialises in this type of stuff? Checked the DPF doctor site but closest is Ennis or Carrick on Shannon which are both about 2 hrs from me.

I have very frequent regens every 50km or so and high differential pressure even at idle so I suspect my filter is getting clogged with ash even though I dont have any warning lights yet.

BrianD3

What is the cost of these DPF cleanings compared to the cost of fitting a new DPF. A quick search on ebay.co.uk brings up new DPFs for various cars for around 250-350 GBP. That's less than I would have thought - or is there some catch.

User1998

https://www.boards.ie/discussion/comment/123336839#Comment_123336839

Plus VAT, customs, postage, labour etc ..

Cleaning is around €150 to €200

zg3409

https://www.boards.ie/discussion/comment/123336224#Comment_123336224

You can read some of my dpf history here

https://www.golfmk7.com/forums/index.php?threads/dpf-diesel-particle-filter-wear-testing-using-odb-reader.331184/page-3

Heating a dpf removes or burns off soot. You cannot burn off ash like in a fireplace. Once clogged with ash it needs to be replaced. Not much cleaning places can do. They can remove soot.

They say eBay dpf are made with cheap materials (not as much platinum as real dpfs) and should be 500-1000 from dealer. Genuine DPFs are stolen from cars due to the value even as scrap.

Main thing is to get proper diagnosis from a good mechanic and avoid dpf cleaning unless mechanic recommends it.

Regeneration every 100km is a sign dpf may be in emergency mode due to sensors not working or a sign it's 80% full of ash and fills up to 100% with soot, then burns off soot down to 80% and back up to 100% again after 100km. I used phone app vag dpf (for VW) and forscan (for ford) to self diagnose and root cause various dpf issues. Often it's a combination of multiple things but high mileage and original dpf means a new dpf costing 500-1000 euros which most people want to avoid. Some gut and remap car to work without it

fatbhoy

https://www.boards.ie/discussion/comment/123350043#Comment_123350043

Once clogged with ash it needs to be replaced.

I don't think that's true.