MOT without catalytic converter in diesels

Discussion in 'Motorhome Chat' started by PJGWiltshire, Apr 27, 2013.

  1. PJGWiltshire

    PJGWiltshire Funster

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    Just got back from having the MOT carried out. Passed no problem even though I had removed the catalytic converter. The guy noticed that I had removed it and clearly was aware that there have been some dispute over this subject with diesel vehicles. It appears that he got into a bit of a dispute with some commercial Ducato owners who like MH owners had been victims of thefts and replaced the Cat with exhaust tubing. Having failed a vehicle the appeal was followed up and the appeal team fully informed the test centre that as emissions are not checked there is no requirement for diesels to have a Cat only petrol vehicles.
    Well any case the MOT centre were no problem

    Good luck to others :Smile:but be prepared to stand your ground

    In any case if anybody wants the MOT centre details drop me a line they are next to Southend airport
     
    Last edited: Apr 27, 2013
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  2. Geo

    Geo Trader - Funster

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    The confusion is easy to understand

    The tester who only reads in the manual what he thinks he needs will get it wrong

    Section 7.1 item 3 reason for rejection A Catalytic Converter missing where one was fitted as standard
    Results in an Incorrect Fail

    Completely ignoring Note 3 will be the cause of this error

    Note 3 to be read in conjunction with reason for rejection 3

    On vehicles that qualify for a full Cat emissions test
    Check for presence of a Catalytic Converter

    Clearly this cant apply to diesels as they only need a smoke/visibility test even though that is done via an emissions testing device

    So if your tester gets it wrong, offer ever so politely to show him in the manual where he went wong:Eeek:
    IF YA DARE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:Rofl1:
     
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  3. Techno

    Techno Funster Life Member

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    For information and Geo will be well aware of this. As of Feb 2014 the above no longer applies and the missing cat will be a fail if it was fitted at time of manufacture.

    *note previous post was April 2013
     
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  4. Tootles

    Tootles Funster

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    Interesting. So how would they know if one was fitted at manufacture?? My BMW K1100 hasn't got a CAT, but the same model built two months later has. My Ducato hasn't got one, but some of the 2.5 turbo's have.
     
  5. Techno

    Techno Funster Life Member

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    Vin number
     
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  6. Techno

    Techno Funster Life Member

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    I imagine it would be "relatively" easy to encourage a piece of appropriately sized pipe through the middle of a X250 cat :whistle:
    [​IMG]
     
  7. Tootles

    Tootles Funster

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    Right. So then the auto stats thing concerning a vehicle's VIN number, would automatically tell the tester that a CAT was fitted?? And likewise, refuse to allow the test to continue if the CAT was missing. Like, the machine would refuse to take a sample, or would it just be down to the fitter to be observant?
     
  8. Techno

    Techno Funster Life Member

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    Nothing to do with emissions "visual inspection for the presence of"
    An appropriate tool (must not cause damage) may also be applied to ascertain it is not an empty CAT like hollow.
    Test would continue but fail.
     
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  9. Techno

    Techno Funster Life Member

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    Naturally the usual ploy to avoid is to refit a cat for the test.

    EDIT 3 bolts 1 clamp 2 rubber hangers, new gasket.
     
    Last edited: Jan 16, 2015
  10. Tootles

    Tootles Funster

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    So in truth, you could replace the cat with pipe, weld a box stuffed with brillo pads over the section, stick the sensors into it, and you pass.
     
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  11. Johns_Cross_Motorhomes

    Johns_Cross_Motorhomes Trader - Motorhome & Accessory Sales

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    So the scroats will still see it and steal it, defeats the object really

    Peter
     
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  12. Techno

    Techno Funster Life Member

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    No need, the Lambda sensor is in the pre Cat straight after the exhaust manifold. The main Cat is a free entity.
    As for theft that is not a concern given how my van is used and stored.
    The point is not to prevent theft but to unbridle the engine so it performs as it really should. A Cat on a diesel makes no difference to emissions.
     
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  13. Tootles

    Tootles Funster

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    Puzzled. So why the need for one??
     
  14. GWAYGWAY

    GWAYGWAY Funster

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    Isn't that exactly what a particulate filter is the same as required by LEZ for £2300 +VAT from approved companies.
     
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  15. Techno

    Techno Funster Life Member

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    I'm as puzzled as you.
     
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  16. Tootles

    Tootles Funster

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    :rofl::rofl::rofl::rofl:
     
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  17. Techno

    Techno Funster Life Member

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    Particulate filter is much harder to overcome in presence and engine management. A good advert for buying older vehicles.
     
  18. Techno

    Techno Funster Life Member

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    When the time comes for a new exhaust I'll have a private word with a custom builder to sort my requiremnts
     
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  19. Jonkil

    Jonkil Funster

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    Catalyst converters and DPF's.....
    A clever device for removing dosh from owners pockets.
     
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  20. pappajohn

    pappajohn Funster Life Member

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    No need Andy.
    The only MOT requirement is the presence of the cat.
    Smack out the guts and the cat is still present so it will pass.
     
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