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320d won't pass emission test #1061961
13th Nov 2018 1:59am
13th Nov 2018 1:59am
Joined: Dec 2003
Posts: 5,683
Bebington, Wirral
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DavidB Offline OP
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DavidB  Offline OP
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My 2003 BMW 320td won't pass the emissions test - I fixed everything else for the MOT, but it was returned with a fail.
It was smoking on acceleration in the past, but is now free of that completely, but I can't get it through this test.

I read new emission levels were introduced this year, meaning around 90% of older diesels won't pass the test.

Broke/unemployment/wahwah/etc means it's this or walking, so any cheap advice would be appreciated. smile


"C20 LET bang"
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Re: 320d won't pass emission test [Re: DavidB] #1061962
13th Nov 2018 2:40am
13th Nov 2018 2:40am
Joined: Jul 2008
Posts: 12,470
Birkenhead
diggingdeeper Offline

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What was the reading?


In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

We should judge our economy by the absence of poverty, not the number of billionaires - Jeremy Corbyn
Re: 320d won't pass emission test [Re: DavidB] #1061970
13th Nov 2018 9:38am
13th Nov 2018 9:38am
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Wirral
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venice Offline

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Dosing with additive and being taken a 30mile motorway route direct to the testing point got my diesel through last time. ( OH had put 'Cataclean' in for me, but it needs using quite far ahead of test ) Additives not cheap, but are in comparison to loss of car. Good luck next time.

Re: 320d won't pass emission test [Re: DavidB] #1061973
13th Nov 2018 10:26am
13th Nov 2018 10:26am
Joined: Dec 2010
Posts: 2,071
Oxton
Gibbo Offline
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Gibbo  Offline
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Does it have an emissions sticker on the car somewhere?

I've heard that if it does then the tester must fail the car if it exceeds the sticker.

But if the sticker isn't there then the tester refers to a much higher (but still OK) generic level depending on age and engine size.

I think this is it:

https://www.gov.uk/government/publi...smoke-test-limits-and-annual-assessments

Other than that, the usual "Italian Tuneup", good quality fuel, service and cataclean should help.

Last edited by Gibbo; 13th Nov 2018 10:28am.
Re: 320d won't pass emission test [Re: DavidB] #1061976
13th Nov 2018 11:00am
13th Nov 2018 11:00am
Joined: Jul 2008
Posts: 12,470
Birkenhead
diggingdeeper Offline

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Using the manufacturer plated value is stupid. It wasn’t compulsory for the manufacturer to plate the value in 2003 yet now it becomes a compulsory element of MOT if the manufacturer chose to plate it.

The classic example is a 2002 VW Passat, plated figure of 0.64 against a default of 3.0. There are brand new diesels that might struggle with 0.64.

The 0.64 was the value for a new car, it wasn’t intended to last for life.


In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

We should judge our economy by the absence of poverty, not the number of billionaires - Jeremy Corbyn
Re: 320d won't pass emission test [Re: DavidB] #1061983
13th Nov 2018 11:58am
13th Nov 2018 11:58am
Joined: Jun 2011
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Wallasey
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Habdab Offline
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Wallasey
Try changing the oil and all the filters, then on the way to the test center, drive in a low gear to increase the engine revs and blow all the rubbish out of the system prior to the test.


Fetere sum, ego sum Ergo
Re: 320d won't pass emission test [Re: DavidB] #1062064
16th Nov 2018 12:09pm
16th Nov 2018 12:09pm
Joined: Jul 2018
Posts: 1
London
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Mcavoy Offline
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London
"Italian Tuneup" did the trick for me a few years back. I got rid of the car shortly after though. Didn't want to go through that again the following year.


Hi!
Re: 320d won't pass emission test [Re: DavidB] #1062163
18th Nov 2018 12:46pm
18th Nov 2018 12:46pm
Joined: Mar 2010
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Heswallish
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fish5133 Offline
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got my old petrol berlingo through using the clean up stuff you squirt up the air intake into carb with engine running.

Re: 320d won't pass emission test [Re: DavidB] #1062260
20th Nov 2018 1:16pm
20th Nov 2018 1:16pm
Joined: Dec 2003
Posts: 5,683
Bebington, Wirral
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DavidB Offline OP
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DavidB  Offline OP
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Bebington, Wirral
Going somewhere else a couple of days later did the trick. It was under the specified (co2 was 1.8 on the sticker thingy).
Wonder what happened there? They should give their probe a wipe.


"C20 LET bang"

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