106. 1.1 1998 emission fail mot

[zippy007]

check for fault codes none listed.new cat last year 9000 miles ago.below are the result:
Fast idle Test. c
o 0.30 max actual 0.627.Fail.
hc 200ppm actual 44ppm Pass.
lambda 0.970-1.030 actual 1.047. fail.
second fast test.
co 0.701 fail.
hc 50ppm pass.
lambda 1.034 fail.
anyone had similar problem if so can you point me in the right direction.thanks
been to 2 different garages no leaks from exhaust,replace lambda now passed,changing cat next week,new plugs and service.let you know later on
NEW cat co:0.006 pass. hc:9.ppm. pass. lambda 1.019 pass..end of post.

[richiepearce]

I sounds like there may be an exhaust leak did the mot tester mention or advise any?

When was the last oil and filter change also the last time it had spark plugs these all have an effect on emissions.
To be honest though because the lambda is reading high it does sound like exhaust blow

[sterion75]

There is a treatment to put in the fuel tank for MOT emissions, saw it in Halfrauds. About £6. I have also used something similar that worked for a re test. But richie has it right with the maintenance points.

[pauls0701]

i had a 106 about 4 moths ago that failed on very similer results and tried all sorts. new lambda sensor, new cat, secondhand exhaust, second hand standard air filter as it had a sporty one on it and after 4 attempts at the mot i gave up and scrapped the car. i hope you have better luck than i did just dont throw as much maney at it that i did. sorry not better help

[davidireland]

Originally Posted by sterion75

There is a treatment to put in the fuel tank for MOT emissions, saw it in Halfrauds. About £6. I have also used something similar that worked for a re test. But richie has it right with the maintenance points.

A bottle of stuff is not going to fix a blown exhaust!