New rules/law for MOT in May.

Anmarube · Post by **Anmarube** » Wed Mar 07, 2018 10:58 pm

What happens with modified silencers etc? Re-welded DPF and silencers,are they an automatic failure?

Mr Tidy · Post by **Mr Tidy** » Wed Mar 07, 2018 11:00 pm

Anmarube wrote: ↑Wed Mar 07, 2018 10:58 pm What happens with modified silencers etc? Re-welded DPF and silencers,are they an automatic failure?

DPF will never be an issue for Z4s!

Anmarube · Post by **Anmarube** » Wed Mar 07, 2018 11:02 pm

Mr Tidy wrote: ↑Wed Mar 07, 2018 11:00 pm
Anmarube wrote: ↑Wed Mar 07, 2018 10:58 pm What happens with modified silencers etc? Re-welded DPF and silencers,are they an automatic failure?
DPF will never be an issue for Z4s!

Yeah obviously but a lot own diesels.

Ducklakeview · Post by **Ducklakeview** » Wed Mar 07, 2018 11:08 pm

DPF removal is a fail, as is any removal of emissions control equipment. I also seem to recall reading that any visible smoke from a DPF equipped vehicle is also a fail, probably to catch those that have removed the internals.

A welded up silencer shouldn't be a problem, as it could have theoretically been repaired, and as long as it's not leaking should pass.

http://garagewire.co.uk/news/mot-dpf-changes-now-expected-in-may-2018-dvsa-confirms/

Interestingly that pages says;

"While it is illegal for drivers to use a car with the DPF removed, it is not illegal for garages to take them out."

Mike

Anmarube · Post by **Anmarube** » Wed Mar 07, 2018 11:14 pm

Ducklakeview wrote: ↑Wed Mar 07, 2018 11:08 pm DPF removal is a fail, as is any removal of emissions control equipment. I also seem to recall reading that any visible smoke from a DPF equipped vehicle is also a fail, probably to catch those that have removed the internals.

A welded up silencer shouldn't be a problem, as it could have theoretically been repaired, and as long as it's not leaking should pass.

Mike

Cheers Mike. Have seen a few for sale and wondered what it was all about come May if it was deemed modified or putting out too much Emissions due to lack of material in the silencer. Although I suppose this is only to quieten the silencer and won't affect emissions.

Cheers.

Mr Tidy · Post by **Mr Tidy** » Wed Mar 07, 2018 11:14 pm

Anmarube wrote: ↑Wed Mar 07, 2018 11:02 pm Yeah obviously but a lot own diesels.

Yes, fair enough - I had diseasels for nearly 10 years but bailed out of my 123d in 2014 because of the BMW N47 engine cam-chain issues, not concerns over the dpf!

I've only had N/A straight 6 petrol engines since then.

My main concern with the new regs. is that from what I can make out an EML will be a fail - even if it is only an amber one.

I think I need to buy a code reader that can also clear codes!

Anmarube · Post by **Anmarube** » Wed Mar 07, 2018 11:17 pm

Mr Tidy wrote: ↑Wed Mar 07, 2018 11:14 pm
Anmarube wrote: ↑Wed Mar 07, 2018 11:02 pm Yeah obviously but a lot own diesels.
Yes, fair enough - I had diseasels for nearly 10 years but bailed out of my 123d in 2014 because of the BMW N47 engine cam-chain issues, not concerns over the dpf!

I've only had N/A straight 6 petrol engines since then.

My main concern with the new regs. is that from what I can make out an EML will be a fail - even if it is only an amber one.

I think I need to buy a code reader that can also clear codes!

Yeah that too. Our BMWs throw them up weekly and go off again at will.

Mr Tidy · Post by **Mr Tidy** » Wed Mar 07, 2018 11:19 pm

Anmarube wrote: ↑Wed Mar 07, 2018 11:17 pm Yeah that too. Our BMWs throw them up weekly and go off again at will.

It's not just me then!

But why is an amber a fail - makes sense for a red, but amber is surely only advisory?

Anmarube · Post by **Anmarube** » Wed Mar 07, 2018 11:22 pm

Maybe they will treat an amber as a Minor. Not read all the new rules yet. I'm not a tester by the way.
Think older diesels are pretty much done for come May.

cj10jeeper · Post by **cj10jeeper** » Thu Mar 08, 2018 10:24 am

Mot reg 8.2.2.1
Paraphrased - DPF removed, cup open or welded is a reject unless proof of legitimate reason such as cleaning

Of course one of the few things a Z can fail on

Ducklakeview · Post by **Ducklakeview** » Thu Mar 08, 2018 10:27 am

Anmarube wrote: ↑Wed Mar 07, 2018 11:22 pm Maybe they will treat an amber as a Minor. Not read all the new rules yet. I'm not a tester by the way.
Think older diesels are pretty much done for come May.

Amber is a "major fault" so it's a fail..

Found the bit about diesel smoke;

: 2018-03-08_09-24-27.jpg (249.32 KiB) Viewed 748 times

: 2018-03-08_09-25-46.jpg (290.57 KiB) Viewed 748 times

Reading through the manual, a brake pad warning light is also a fail, as is any ABS or engine management warning light.

Mike

piotrZ4 · Post by **piotrZ4** » Thu Mar 08, 2018 10:29 am

new rules ,same old mot testers that happy to bend the rules for extra £20

Ducklakeview · Post by **Ducklakeview** » Thu Mar 08, 2018 10:30 am

cj10jeeper wrote: ↑Thu Mar 08, 2018 10:24 am Mot reg 8.2.2.1
Paraphrased - DPF removed, cup open or welded is a reject unless proof of legitimate reason such as cleaning

Of course one of the few things a Z can fail on

You mean Not fail on lol..

Also, they've covered their @rses by saying ANY visible smoke from a DPF equipped vehicle is a fail.. Can see a lot failing on that one, especially cars where the regen doesn't get carried out due to short journeys! Once the filter reaches it's soot capacity, it either clogs, or lets everything through.. Glad my van is Pre-DPF, just.

Mike

Ducklakeview · Post by **Ducklakeview** » Thu Mar 08, 2018 10:33 am

piotrZ4 wrote: ↑Thu Mar 08, 2018 10:29 am new rules ,same old mot testers that happy to bend the rules for extra £20

That's getting a lot harder for them to do, especially with emissions etc, as the DSM/Gas analysers are being linked directly to the MOT PC's so there can be less scope for "influence" on the part of the tester. I know of one guy that got caught in Liverpool last year, was doing an MOT "for a friend" and the car wasn't even at the test centre. However It had been involved in some sort of incident several miles away at the time it was "logged on" to the MOT system for it's test to be done. This came to light after some digging by the plod..

Mike

cj10jeeper · Post by **cj10jeeper** » Thu Mar 08, 2018 10:52 am

Ducklakeview wrote: ↑Thu Mar 08, 2018 10:30 am
cj10jeeper wrote: ↑Thu Mar 08, 2018 10:24 am Mot reg 8.2.2.1
Paraphrased - DPF removed, cup open or welded is a reject unless proof of legitimate reason such as cleaning

Of course one of the few things a Z can fail on
You mean Not fail on lol..

Also, they've covered their @rses by saying ANY visible smoke from a DPF equipped vehicle is a fail.. Can see a lot failing on that one, especially cars where the regen doesn't get carried out due to short journeys! Once the filter reaches it's soot capacity, it either clogs, or lets everything through.. Glad my van is Pre-DPF, just.

Mike

Yes of course - typo. Distracted by breakfast on train arriving

There are many more ways they can catch such changes or mods, but visible is enough or emission enough

In your second post the test can be conducted without internet connection. Use is monitored though. My friends garage lost all internet for days so he reverted to manual systems.
The odd car can still get through if a station wants to, but the risks are high for them. IMHO it’s more these days for traders using a regular test centre that passes work, borderline fails will pass or become advisory

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