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Regarding removal of the DPF

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  • Premier_2
    Premier_2 Posts: 15,141 Forumite
    10,000 Posts Combo Breaker
    @ pinkteapot .

    Yes I believe it is a common problem that affects diesel cars made by most manufactures .
    You can blame the driver habits for causing this and that would be correct , but then how many of them knew or even heard about the DPF very view from the evidence we can now see.

    Yes we have no doubt that is what you believe.

    However the question was:

    "Any evidence that the DPF failing is "the most common fault" on diesel cars?"
    "Now to trolling as a concept. .... Personally, I've always found it a little sad that people choose to spend such a large proportion of their lives in this way but they do, and we have to deal with it." - MSE Forum Manager 6th July 2010
  • Trebor16
    Trebor16 Posts: 3,061 Forumite
    Premier wrote: »
    What do you think smoke is if not particulate matter suspended in air/other gases?

    What do you think the purpose of a diesel particulate filter might be in this regard?

    They reduce smoke emissions. But would a car that has had the DPF removed fail the MOT smoke test?
    "You should know not to believe everything in media & polls by now !"


    John539 2-12-14 Post 15030
  • Trebor16
    Trebor16 Posts: 3,061 Forumite
    And as soon as you get pulled by VOSA at one of their roadside checks and they do an emissions check it'll fail.

    And you can say that with 100% certainty that a diesel with the DPF removed will fail the smoke test administered by VOSA?
    "You should know not to believe everything in media & polls by now !"


    John539 2-12-14 Post 15030
  • I've been driving nigh on 20 years and never been pulled by VOSA, so them stopping me for an emissions test wouldn't even factor in the decision of whether or not to remove a DPF.
    The insurance side of it, well as the pipe is still in place and the insides have been gutted, it would take a very thorough inspection to spot it.
    I've removed cats in the past and had no problems with emission tests, how this will go with the changes on April 1st I'll have to see.As long as it meets the emission levels I can't see it causing a problem with my MOT tester.
  • citykid5
    citykid5 Posts: 821 Forumite
    I've been driving nigh on 20 years and never been pulled by VOSA, so them stopping me for an emissions test wouldn't even factor in the decision of whether or not to remove a DPF.
    The insurance side of it, well as the pipe is still in place and the insides have been gutted, it would take a very thorough inspection to spot it.
    I've removed cats in the past and had no problems with emission tests, how this will go with the changes on April 1st I'll have to see.As long as it meets the emission levels I can't see it causing a problem with my MOT tester.
    do vosa even exsist in the car world? i've been driveing nearly 30 yrs and have never meet any? and i was a hgv driver for 7 years and never came into contact whith them then either,mind you i was deriveing a royal mail lorry.my son since removeing the dpf also says,he's noticed less soot around his rear bumper on his white car.also i drive a seat arosa 1.4tdi and had my cat removed a couple of years ago,because they don't work? they just strangle your engine.on it's last mot they did a immisions test,and the exceptable pass level is 2.10 ppm. my car without cat gave a reading of 0.35ppm so passed with flying colours? :T
  • citykid5 wrote: »
    do vosa even exsist in the car world? i've been driveing nearly 30 yrs and have never meet any? and i was a hgv driver for 7 years and never came into contact whith them then either,mind you i was deriveing a royal mail lorry.my son since removeing the dpf also says,he's noticed less soot around his rear bumper on his white car.also i drive a seat arosa 1.4tdi and had my cat removed a couple of years ago,because they don't work? they just strangle your engine.on it's last mot they did a immisions test,and the exceptable pass level is 2.10 ppm. my car without cat gave a reading of 0.35ppm so passed with flying colours? :T

    I live in a very rural area and in the last two years I've seen three VOSA/DVLA checkpoints all set up on country roads within Worcestershire. They are very active in this area.
    "There are not enough superlatives in the English language to describe a 'Princess Coronation' locomotive in full cry. We shall never see their like again". O S Nock
  • citykid5
    citykid5 Posts: 821 Forumite
    I live in a very rural area and in the last two years I've seen three VOSA/DVLA checkpoints all set up on country roads within Worcestershire. They are very active in this area.
    probably checking for red diesel?
    or would that be hmrc
  • Wig
    Wig Posts: 14,139 Forumite
    And as soon as you get pulled by VOSA at one of their roadside checks and they do an emissions check it'll fail.
    How many times have you or anyone here been pulled by VOSA for an emmisions check or otherwise whilst driving a family car?
  • Gloomendoom
    Gloomendoom Posts: 16,551 Forumite
    Part of the Furniture 10,000 Posts Combo Breaker
    I've only seen a VOSA emission check once... on the A45 Canley Bypass in Coventry.

    I had a brand new car so they didn't pull me, they seemed to be only interested in older cars. It was a while ago though. 1994 IIRC.
  • patman99
    patman99 Posts: 8,532 Forumite
    Part of the Furniture 1,000 Posts Combo Breaker Photogenic
    Its not a legal requirement to fit DPFs in the UK (in fact it is only a legal requirement in 3 EU countries afaik).
    Am looking at a diesel Ranger and asked my mechanic about removing the DPF and he told me it would be easier to get through the emissions as it won't get clogged-up and need a good blast down the motorway (in the process, blasting-out all the particles originally captured by the DPF in the first place, thus gaining no benefit at all).

    If you remove the DPF, also get a blanking kit for the EGR as this stops your inlet manifold getting choked.
    Never Knowingly Understood.

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