smelly cat disco 2 v8

:doh:hi any body out there help
my disco 2 just passed the mot but was close on the emissions test.
just had 2 new cats and sensors and a new air mass sensor.

now and agin get a sulper smell any body got any idea,s what this might be .
what should i do next to solve the problem.
as i need to get the emissions better for next time.

mant thanks

you are pumping fuel into the cats! it will kill them! its normaly caused by a misfire or a drippy injector

hi how do i find out what it is thanks

when was it last serviced???

First thing to try is an adaptive reset of the engine ecu.

hi how do you reset the ecu.


thanks dav