View single post by KevG
 Posted: Sat Apr 23rd, 2011 08:13 pm
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Joined: Wed Aug 16th, 2006
Location: Manchester, United Kingdom
Posts: 1588
silverfox wrote: Anyone done a CO test on one of the new shape BMWs 57 plate E90 325i with the new type engine. when you stick the probe first in the exhaust pipe at the start of the test, the engine runs so clean the gas machine wont even recognize its in so wont proceed with the test. cant be the machine as we tested another car straight away and it worked fine   

Hi, This can be because the engine has gone into lean burn mode.

We do MOTs for a local BMW dealer.

The fix is to re start the car and do the ems test without driving it, that way it wont go into lean burn mode.