DPF Regeneration

Biker Bob · 13-04-2008, 11:09

Hi Guys,

When the DPF regenerates do you tend to see a cloud of smoke from the exhaust?
My 56 plate vRS TDI regularly emits a significant cloud of smoke particularly when I have been running at the 2-2500 RPM mark for a time.
Cheers,

Bob

dstev2000 · 13-04-2008, 13:34

It has been reported that the engine will idle a little higher than normal and feel a little rough at the same time.

This is presumably done to get the DPF up to the regenerating temperature.

As for the clouds of smoke? you'll need Skoda to look it over and tell you whats going on, if you have no luck with the dealer your best bet is to speak to Skoda customer services.

Lummox · 13-04-2008, 13:38

If regen is running you may well see a something from the exhaust. Any issues with the DPF system will show up a warning light.

The DPF light will also show if the car requires you to drive specifically so clear the DPF. Oddly enough not trashing the nuts out of it as some people believe. 2000rpm, steady throttle.

Biker Bob · 13-04-2008, 18:58

Thanks for the advice guys.
I assume that you would only carry out the DPF regeneration procedure if the DPF light comes on? Because of the motorway driving I do I haven't seen the DPF light come on. Sounds like the smoke (which is noticeable in the rear view mirror at 70mph) is not normal. Will get dealer to look at it tomorrow.

Lummox · 13-04-2008, 19:03

You dont need to do anything unless the light comes on no.

But if at some point you can find a couple of mins to drive at around 2krpm then the soot will drop down in the dpf anyhow.

bahnstormer vrs · 13-04-2008, 20:14

Quote:

Originally Posted by Lummox

But if at some point you can find a couple of mins to drive at around 2krpm then the soot will drop down in the dpf anyhow.

That has been suggested to me as a 'preventative' measure; but it has to be 1,800 to 2,000 rpm in 4th (40mph) or 5th gears (58mph). Doing 58mph in 6th or 40mph in 3rd won't work!

Biker Bob · 13-04-2008, 20:28

Is there any reason why this DPF regeneration has to be done in 4th or 5th gear? 2000rpm in 6th is 70mph which is a reasonable thing to do as I cover a lot of motorway miles. I guess slipstreaming some trucks at 56mph for a while should do the trick?
Having said all this I have only seen the DPF light once in just over a year and 37500 miles and that was last week when the Engine light had been on for 3 days and the car was running rough as old boots

bahnstormer vrs · 13-04-2008, 20:39

Quote:

Originally Posted by Biker Bob

Is there any reason why this DPF regeneration has to be done in 4th or 5th gear? 2000rpm in 6th is 70mph which is a reasonable thing to do as I cover a lot of motorway miles. I guess slipstreaming some trucks at 56mph for a while should do the trick?

Its a factor of engine load and the requirement to overfuel to get the DPF temperature up and the soot burnt off.

Doing 1,900rpm in 5th = 58mph worked for me this morning. I had the benefit of the RAC man's Laptop (briefcase size really) connected up; initially showing DPF 54% full (sooted up) and progressively getting the soot burnt off and going down all the way to 0% over about 10 miles.

magic62 · 13-04-2008, 21:13

What I know from our german forum, the regenerationproces will start at about 2250 and will be stopped if the motor turns more than 3200.
So too quick, as well as too slow wont do it.

13-04-2008, 11:09	#1
Biker Bob Briskodian Join Date: Sep 2007 Posts: 16 Thanks: 1 Thanked 0 Times in 0 Posts	DPF Regeneration Hi Guys, When the DPF regenerates do you tend to see a cloud of smoke from the exhaust? My 56 plate vRS TDI regularly emits a significant cloud of smoke particularly when I have been running at the 2-2500 RPM mark for a time. Cheers, Bob __________________ His:ctavia vRS TDI Estate - Race Blue Triumph Trophy 900 - British Racing Green Hers: ctavia L&K 2.0 TDI - Blue Triumph Bonneville T100 - Green/Gold

13-04-2008, 13:34	#2
dstev2000 Briskodian Join Date: Aug 2005 Location: All over the place Posts: 3,825 Thanks: 37 Thanked 150 Times in 136 Posts	Re: DPF Regeneration It has been reported that the engine will idle a little higher than normal and feel a little rough at the same time. This is presumably done to get the DPF up to the regenerating temperature. As for the clouds of smoke? you'll need Skoda to look it over and tell you whats going on, if you have no luck with the dealer your best bet is to speak to Skoda customer services. __________________ MY08 L&K: Black-Estate-Diesel-Sunset Glass-MFD2-W8 Interior light-Colour coded door strips-LED sidelights and Puddle lights-VAG-COM fettled-Lovely! SWMBO's: MY08 vRS TDI - Standard

13-04-2008, 13:38	#3
Lummox Hairy Yeti Join Date: Sep 2003 Location: Newport Pagnell Posts: 21,316 Thanks: 18 Thanked 558 Times in 488 Posts	Re: DPF Regeneration If regen is running you may well see a something from the exhaust. Any issues with the DPF system will show up a warning light. The DPF light will also show if the car requires you to drive specifically so clear the DPF. Oddly enough not trashing the nuts out of it as some people believe. 2000rpm, steady throttle. __________________ Unit 18 now open Servicing, repairs, modifications you name it we do it. Cupra console bushes at special price, PM for a very competitive quote.

13-04-2008, 18:58	#4
Biker Bob Briskodian Join Date: Sep 2007 Posts: 16 Thanks: 1 Thanked 0 Times in 0 Posts	Re: DPF Regeneration Thanks for the advice guys. I assume that you would only carry out the DPF regeneration procedure if the DPF light comes on? Because of the motorway driving I do I haven't seen the DPF light come on. Sounds like the smoke (which is noticeable in the rear view mirror at 70mph) is not normal. Will get dealer to look at it tomorrow. __________________ His:ctavia vRS TDI Estate - Race Blue Triumph Trophy 900 - British Racing Green Hers: ctavia L&K 2.0 TDI - Blue Triumph Bonneville T100 - Green/Gold

13-04-2008, 19:03	#5
Lummox Hairy Yeti Join Date: Sep 2003 Location: Newport Pagnell Posts: 21,316 Thanks: 18 Thanked 558 Times in 488 Posts	Re: DPF Regeneration You dont need to do anything unless the light comes on no. But if at some point you can find a couple of mins to drive at around 2krpm then the soot will drop down in the dpf anyhow. __________________ Unit 18 now open Servicing, repairs, modifications you name it we do it. Cupra console bushes at special price, PM for a very competitive quote.

13-04-2008, 20:28	#7
Biker Bob Briskodian Join Date: Sep 2007 Posts: 16 Thanks: 1 Thanked 0 Times in 0 Posts	Re: DPF Regeneration Is there any reason why this DPF regeneration has to be done in 4th or 5th gear? 2000rpm in 6th is 70mph which is a reasonable thing to do as I cover a lot of motorway miles. I guess slipstreaming some trucks at 56mph for a while should do the trick? Having said all this I have only seen the DPF light once in just over a year and 37500 miles and that was last week when the Engine light had been on for 3 days and the car was running rough as old boots __________________ His:ctavia vRS TDI Estate - Race Blue Triumph Trophy 900 - British Racing Green Hers: ctavia L&K 2.0 TDI - Blue Triumph Bonneville T100 - Green/Gold

13-04-2008, 21:13	#9
magic62 Briskodian Join Date: Jan 2007 Location: Leverkusen Germany Posts: 63 Thanks: 0 Thanked 7 Times in 6 Posts	Re: DPF Regeneration What I know from our german forum, the regenerationproces will start at about 2250 and will be stopped if the motor turns more than 3200. So too quick, as well as too slow wont do it. __________________ Silver 2006 vRS-TDI estate, mostly std, just a couple of mild changes. Roofrack, alarm, heated rearseats, VW RNS 510 + CD-changer, sunsafe + Climair sonniboys, cruisecontrol, , HillHold, interior superflux leds, original SonyEricsson FSE with K810i, BBS RD394 16" winterwheels, polished BBS VZ033 (CH) 18" summerwheels.

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