Hi all Wondering if anyone can help.
My Sciricco 1.4TSI 160 has failed MOT on Emmisions , So i took the car out got it really hot gave it a good blast and it failed again. So the garage did a check there was no codes or EML, but they said pre Cat Lambda sensor was showing negtive reading. So i agreed to have this changed and retest.
It failed again even worse. The garge are a bit stumped to what it can be as car is showing no signs of any issues seems to drive ok. in my ownership it doesnt seem to be using any oil ive had it since june and not had to top it up yet. I have also changed the oil and filter in the last month as well as the cam shafter ajustment valve. The car drive well good performance really good MPG, Only thing it does smell a bit rich when idling. and maybe 1 in every 4 start ups bit of smoke but clears quickly after its warmed up.
in april pre my ownership it had sprakplugs changes and 1 coil pack sue to a misfire on cylinder 1. its only failed on emissions before in 2023 where it had a Lamba sensor changed then.
the car is on 128K year 2011 looks to have been serviced regularly.
Any help or advise much appriciated.
only thing i can think or trying next is some sort of emissions cleaner?
Thanks
Darren