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Dpf Removal


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#46 andysvision

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Posted 02 September 2013 - 11:41 AM

There's more benefits that can be had by removing it, but even washing and replacing, that does for now, it still needs replacing ultimately at its 75k miles mark

 

so final answer WASH it?look at this video i found does it work ?is it worth



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#47 andysvision

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Posted 02 September 2013 - 11:42 AM

so final answer WASH it?look at this video i found does it work ?is it worth

 

i dont know why the video link doesnt aper,just go on youtube and serch with this name

:   

Pro-Line Dieselpartikelfilter-Reiniger (DPF-Reiniger) von LIQUI MOLY


#48 flippin'eck

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Posted 10 November 2013 - 08:21 PM

When the DPF's clogged full of ash, what exactly is that ash made up of? And, what with the cerium-based catalyst liquid being used, do the focus DPFs actually contain any catalyst of their own?

 

I'm just trying to figure out whether it's going to be significantly damaging to the DPF itself, to flush it through with various liquids.. and also what the most useful fluids would be.

 

e.g. maybe a damn good wash through with brake cleaner to remove the oil based crud, then let's say if the ash is mainly a basic compound, a gallon of brick cleaner.. ?

 

Or lye if it's acidic?

 

or biological washing powder..?

 

i don't really trust prepackaged solutions these days, they're often so bound by regulation that they contain nothing of any use. Like the halfords rust remover I just bought that turned out to be a weak form of lemon juice.



#49 flippin'eck

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Posted 10 November 2013 - 10:17 PM

http://www.dieselnet...ech/dpf_ash.php

 

Ash derived from lubricant additives is composed primarily of zinc,
calcium, and magnesium in the form of sulfates, phosphates, and oxides

 

hmm.. so what liquid chemical would react well with those without significantly eating the dpf itself

 

i'm thinking brake cleaner followed by brick cleaner (hydrochloric acid).? both liquids that can be bought easily in bulk at useable concentration



#50 jeebowhite

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Posted 11 November 2013 - 11:55 AM

Are you looking to remove the DPF to clean it?

 

In all honesty you would be better getting it removed. At the moment, you could spend plenty of time and money on trying to clean it to damage the filter, or let the chemicals remain and be part of the next occurance of build up. To remove and map it out, you would be a lot better off and would cost you a fraction of a new filter.



#51 flippin'eck

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Posted 14 November 2013 - 07:44 PM

just fixed my particular problem, with a 'forced regen' by a ford dealer. he said he's seen this particular scenario loads - the car tries to do a regen and fails (cause the driver got out). tries again... driver gets out too early.. computer clocks up another failed regen. eventually it seems, there's a line of code in there somewhere that says, something like.. if you tried to do a regen more than x times, well it must be ash, not soot. And throws an 'ash' error. And locks up.

 

car's been fine - in fact bagfuls more poke - ever since. I don't know what button Mr Ford presses on his magic computer to clear the "ash in dpf" code & then do a full regen, but my 30 quid code reader doesn't have it and nor does my garage's 500 quid one. hence their sending it to the ford dealer.

 

happy here for now with no remapping or brick cleaner lol



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