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BMW E92 320 M Sport - Emission failure #

Posted by Steve Sneap on August 7, 2014, 11:09 am
Edited by board administrator August 12, 2014, 1:07 pm

HI All

Had this car for mot failed massively on emissions. BMW advised to test in tick-over only

Anyone else had this? It seems this is a lean burn engine and has to be tested differently
Steve Sneap

Re: BMW E92 320 M Sport

Posted by aidan birley on August 7, 2014, 12:34 pm, in reply to "BMW E92 320 M Sport"

Hi

You dont say what the gas readings are ?

Did it fail the extended test with exact match on engine code ? I thought the lambda limits where extended to accommodate this issue

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/194133/Emissions_17th_Edition.pdf

Cheers Aidan

Link: MOT limts

Re: BMW E92 320 M Sport

Posted by Steve Sneap on August 8, 2014, 6:06 am, in reply to "Re: BMW E92 320 M Sport"
Stephen Sneap

Original post done in a hurry .And its a long story. From memory CO was nearly 5.0%, hc 500, lambda 1.4..It went to bmw They said nothing wrong and provided a gas print out to prove, but again the figures from memory were slightly higher than expected but still a pass .when it went for retest mot got original readings, fail...ongoing...will post all readings later when car returns
Steve Sneap.

Re: BMW E92 320 M Sport

Posted by Edward R Kaps on August 8, 2014, 9:15 am, in reply to "Re: BMW E92 320 M Sport"
Edward Kaps

As Aidan has mentioned, there are revised limits on some of the N engines because of GDI strategy, this shows as very high Lambda at fast idle allthough the CO will be very low (bit difficult to be rich and lean at the same time!). If you have high CO then as well as the basics, these engines suffer from, plugs/coils and especially injector problems.
If the dealer supplied a good Exhaust gas test then they probably cleared all adaptions and tested it straight after!.

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