Thought I would resurrect this thread rather than start another as my tail of woe is similar.
I have an S reg 146 Ti that I have had from 6months old so I know its had a fairly easy life. Done about 115000 miles
Virtually exactly the same MOT emissions results as earlier mentioned except my car failed on low tickover (800rpm) CO emmissions. It was 0.66 against a max of 0.50.
I was going to go the usual route of plugs ( done about 60k), air filter, injector cleaner and a thrash. Any other suggestions or am I barking up the wrong tree completely?
The only other problem I have that may be related is idle at cold. From stone cold you have to feather the throttle else revs will hunt and stall immediately. This is only for 20 - 30 secs then it will control itself. Does this suggest lambda probe or could it be related to the MAF.
Other than this engine is running fine returning about 28mpg on the work run.
Any advice or suggestions much appreciated