View Single Post
  #1  
Old 28th July 2019, 02:20 PM
jt racing jt racing is offline
Member
 
Join Date: Oct 2015
Posts: 67
Default Nct emmisions fail

Hi all.
My1996 4.2 v8 a8 fail the nct/mot today on its emmisions.. Again... It failed previously on this and the exhaust was leaking so had part of it replaced and now the readings are even higher. Shockingly high. Now it'll be going back to the garage next week but I suppose I'm just looking for ideas...
Readings are below. These are today's readings.
Low idle:
Co 6.63 vol above 0.50 %fail
Hc 234ppm

High idle
lambda 0.82. Not between 0.97 and 1.03
Co 6.63 above 0.30%. Fail
Hc234 ppm. Above 200ppm fail


Any ideas?
Thanks
Reply With Quote