emission co level too high

[louisoliver]

Took my car for it's mot today and it failed the emissions. It's a 1995 e280 with a recent lpg conversion. I replaced the lambda at 90k the car has now done 110k. it's failing emissions on the co level on petrol and gas. Have the lpg people been playing about with the petrol management as well as the lpg ecu they fitted?

 

[jimsinessex]

Have you tried an "Italian Tune-up" just prior to taking it in for the check. It works for me and others on here. Seems the CO levels respond to a good blast.

Just getting the engine up to normal working temperature doesn't always seem to be enough.

Jim