DPF filter

Gedd · Sep 21, 2021

The DPF light has come on on my wagon dashboard still drives ok can you bl ow these filters out ive not a clue im useless with mechanics

Username_Required · Sep 21, 2021

You need to get the DPF up to temperature and keep it there for decent amount of time (say 30 mins) to get the soot to burn out of it. Idling won't do it, you'll need the engine under a bit of load to get the exhaust gas temperature up without the gas being too sooty - on a car/van you'd normally suggest driving down the motorway for a couple of junctions.

ACEngineering · Sep 21, 2021

Gedd said:
The DPF light has come on on my wagon dashboard still drives ok can you bl ow these filters out ive not a clue im useless with mechanics

They can be removed and sent away for cleaning but no you wont just blow it out with airline.

Google DPF cleaning. Theres bound to be some clever tit on YouTube that cleans them with TFR and a pressure washer

(I dont recommend)

Username_Required · Sep 21, 2021

ACEngineering said:
They can be removed and sent away for cleaning but no you wont just blow it out with airline.

Google DPF cleaning. Theres bound to be some clever tit on YouTube that cleans them with TFR and a pressure washer (I dont recommend)

Plenty of mechanics used to clean them out with a metal rod and a big hammer.

There are some cerium based additives that can be added to the fuel to help as well, but they won't do much to the soot cake that's already in the DPF. What's the engine?

2wheels · Sep 21, 2021

my son got a toyota avensis taxi one cleaned for £300+. a new is about £3600 inc fitting.

JeepJeep · Sep 21, 2021

I've seen people Steam clean them out and knock f**k out of them... They reckoned they were fine after.

Never had one off myself..

Exfarmer · Sep 21, 2021

JeepJeep said:
I've seen people Steam clean them out and knock f**k out of them... They reckoned they were fine after.

Never had one off myself..

In other words , knock the works out and drive like all the taxis on veg oil from Tesco. Then wonder why the tabloids go on about the evil of diesel engines

JeepJeep · Sep 21, 2021

Exfarmer said:
In other words , knock the works out and drive like all the taxis on veg oil from Tesco. Then wonder why the tabloids go on about the evil of diesel engines

No not quite.. But you can always chop the insides out like you probably thought I meant.

Meanwhile.

Veg Oil in Common rails. Must be substandard old taxis in your area.

ACEngineering · Sep 21, 2021

JeepJeep said:
No not quite.. But you can always chop the insides out like you probably thought I meant.

Meanwhile.

Veg Oil in Common rails. Must be substandard old taxis in your area.

Chopping the insides out is no good when you get to MOT, i think they pick up on that sort of thing now and its a fail.

I bet its not many more years till they clamp down on agri emissions were machines have been modified and are no longer meeting there original emissions target.

Exfarmer · Sep 22, 2021

ACEngineering said:
Chopping the insides out is no good when you get to MOT, i think they pick up on that sort of thing now and its a fail.

I bet its not many more years till they clamp down on agri emissions were machines have been modified and are no longer meeting there original emissions target.

I suspect there are plenty of back street garages still removing them and also handing out MOTs for the same cars

Highland Mule · Sep 22, 2021

JeepJeep said:
I've seen people Steam clean them out and knock f**k out of them... They reckoned they were fine after.

Never had one off myself..

I did that to one I had on a Ford Kuga, out of desparation when it kept misbehaving. Ran a hose down it for a few hours until the soot stopped flowing and the water was clear, then added a bit of Karcher pressure (which wasn't as wise, I concede) until some fluffy wool started to come out. Pushed the wool back in dried it out and then fitted it back on the car. Worked fine, but I know I was lucky.

That should probably be in the Bodges thread, now I think about it.

Username_Required · Sep 22, 2021

Highland Mule said:
I did that to one I had on a Ford Kuga, out of desparation when it kept misbehaving. Ran a hose down it for a few hours until the soot stopped flowing and the water was clear, then added a bit of Karcher pressure (which wasn't as wise, I concede) until some fluffy wool started to come out. Pushed the wool back in dried it out and then fitted it back on the car. Worked fine, but I know I was lucky.

That should probably be in the Bodges thread, now I think about it.

That's a new one, I've never heard of anyone doing that before and I've tested a fair few DPFs in my time. I'm amazed that still works. Did you push the water through from the engine side of the DPF or the tailpipe side?

Username_Required · Sep 22, 2021

2wheels said:
my son got a toyota avensis taxi one cleaned for £300+. a new is about £3600 inc fitting.

I don't know how old the avensis was, but the early ones from about 2006/7 where they had an integrated NOx trap and 5th injector fitted to keep them clean where notorious for breaking.

Highland Mule · Sep 22, 2021

Username_Required said:
That's a new one, I've never heard of anyone doing that before and I've tested a fair few DPFs in my time. I'm amazed that still works. Did you push the water through from the engine side of the DPF or the tailpipe side?

Can't remember, maybe both but probably from the engine side. It was a long time ago, around 2012/13ish.

Username_Required · Sep 22, 2021

Highland Mule said:
Can't remember, maybe both but probably from the engine side. It was a long time ago, around 2012/13ish.

I take it that it never blocked again after that?

Highland Mule · Sep 22, 2021

Username_Required said:
I take it that it never blocked again after that?

Not in ownership. Did another maybe 20k miles and then had issues with the ABS coming on when I didn’t want it to so got shot of it.

Courier · Sep 22, 2021

Gedd said:
The DPF light has come on on my wagon dashboard still drives ok can you bl ow these filters out ive not a clue im useless with mechan

Username_Required said:

You need to get the DPF up to temperature and keep it there for decent amount of time (say 30 mins) to get the soot to burn out of it. Idling won't do it, you'll need the engine under a bit of load to get the exhaust gas temperature up without the gas being too sooty - on a car/van you'd normally suggest driving down the motorway for a couple of junctions.

Click to expand...

Might work - Might not.

If you need a proper solution and are round and about the M62 Corridor then these guys will sort it - It's where main dealers send their problem vehicles

Feather Diesel Services Diesel Pump & Fuel Injector specialists

The UK's leading diesel injection system specialists with over 60 years experience. We inspect, test and repair diesel fuel pumps and injectors.

www.feather-diesel.co.uk

Cowmansam · Sep 22, 2021

Exfarmer said:
I suspect there are plenty of back street garages still removing them and also handing out MOTs for the same cars

Got any addresses one on the Mrs car has cost me 1100 quid so far

Courier · Sep 22, 2021

Cowmansam said:
Got any addresses one on the Mrs car has cost me 1100 quid so far

Feather Diesel Services Diesel Pump & Fuel Injector specialists

The UK's leading diesel injection system specialists with over 60 years experience. We inspect, test and repair diesel fuel pumps and injectors.

www.feather-diesel.co.uk

Gedd · Oct 5, 2021

Turns out it was a knock sensor whatever that maybe fitted a non genuine £276 light still wouldnt dissapear fitter spoke to a main dealer fitter he said fit a genuine one £960 as they very sensitive done that light straight out

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