emmisions failure

[terrorfish]

hi can anyone help, just got car back from mot station failed on high lamda reading here are the readings

fast idle

rpm 2550
co .o7
hc 26 ppm
lamda 1.51

i noticed a pipe was off from the air filter, and i think the timing is slightly out could this be the reason ? thanks adam

 

[terrorfish]

sorry its a 1.4 mk3 golf

 

[^neo^]

spooky........... got one sitting on the driveway doing the same, blagged mine through the retest in the end but the lambda probe has given up the go now so think that was the main culprit on mine.

check for air leaks on the injection unit, usually the vacuum pipes.
change (or remove but dont tell them) the air filter.
oil and filter change
coolant temp sender

They are the main culprits