displaying posts 1 to 14 of 14

Author Subject: Change in MOT
doon1988

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Location: Sheffield

Registered: 08 May 2011

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Post #1
I was recently advised that there has just been or will be shortly a further check introduced in to the MOT system.

This requirement will be for a visual check that the car has a CAT in place regardless of whether it passes the emissions or not.

Just thought I would share this for info. I've seen a few posts on other places saying this just relates to diesels but I am not too sure...

Anybody else know anything more specific?
Posted 18th Feb 2014 at 12:34
aaron6

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Post #2
I've heard the same but that's all I know

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Posted 18th Feb 2014 at 13:05
doon1988

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Post #3
I believe it refers to both DPF's and CAT's and during the chat with my mate he didnt indicate either way whether it was just for diesels or not...

But if you do a Google search all I can find is people referring to diesels...

Just thought id share the info in case anybody has an upcoming MOT as I believe the changes take affect sometime this month.
Posted 18th Feb 2014 at 13:17
rallyestyle

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Post #4
No way mine would pass without a cat in place to be fair LOL I guess it doesnt stop people just having a cat with no internals right?

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Posted 18th Feb 2014 at 13:26
doon1988

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Post #5
I believe it is just a visual check so that may possibly be ok....
Posted 18th Feb 2014 at 13:38
calibra306

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Post #6
Was changed last year! ANY car manafactured with a cat must have one in place otherwise its an instant fail!!

it used to be visual ie if it aint there it cant be tested likewise for air bag lights.

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Posted 18th Feb 2014 at 14:14
anth

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Post #7
Was going to say i thought this was old news
Posted 19th Feb 2014 at 20:21
AndyJ

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Location: Birmingham

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Post #8
Yeah, hasn't this been the case for years?

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Posted 19th Feb 2014 at 20:25
doon1988

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Location: Sheffield

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Post #9
Oh well I dunno I've still got a cat so not something I've ever wondered about haha. I just thought I'd share what I had been told.

Posted 19th Feb 2014 at 21:51
coskev

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Location: Oswestry

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Post #10
Its just come in February for dervs,DPF or CAT missing is a fail now.

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Posted 19th Feb 2014 at 23:04
armzsc6

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Location: Crowborough

Registered: 22 Mar 2008

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Post #11
Did the first mot test I've done for a couple if months yesterday and one of the soecial noticed was confirming they have now brought in a visual check saying if the diesel vehicle should originally have had a cat or DPF then it must be present.

Basically if it's much like my Leon and is late enough that it should have some firm of cat and has an obviously cut and welded straight bit of pipe instead then it's gonna fail lol.

You could easily just remove the cat and hollow it out then refit and it will pass fine provided it passes the metered smoke opacity test.

Havevee as my mate that owns the garage said how are you as a tester meant to know if said vehicle came with a cat or not?
If it has a purpose made decat pipe then many wouldn't notice or bother if it passes the emissions but if it's obviously missing it will fail.

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Posted 23rd Feb 2014 at 10:29
buzzbrightyear

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Post #12
could easily make them to look like it's a cat, straight pipe with a cat looking box shape welded around it if you get me?

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Posted 23rd Feb 2014 at 10:39
armzsc6

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Location: Crowborough

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Post #13
Before this came in my Astor hdi I used to have I did a smoke test and it sailed through first rev as it only smoked under load. That's with a remap as well.

As long as it looks cat like it shouldn't fail.

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Black power baby! SUUUUUPERCHARGED Superman
Seat Leon FR TDI 190BHP 300lbft daily gti-6 killer :p
12x 306's owned so far

Cambelts, clutches, service work carried out on All makes and models, Peugeot Citroen / mitsubishi specialist.
Pug planet / Citroen Lexia diagnostics / code reads available.
Posted 23rd Feb 2014 at 10:42
spike_uk06

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Location: Billingshurst

Registered: 03 Aug 2006

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Post #14
Would this mean that someone say had a car with a DFP system fitted as standard and they had removed it and re-tuned the engine to pass the emissons tests (I don't know if that means taking the CAT out too?), it would now be and instant fail? I have heard of a few people that have done this to PSA diesel engines.. Or is the CAT seperate to the DFP system?

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Posted 24th Feb 2014 at 18:42

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