Excellent news John 8)jgra1 wrote: anyway, it passed an MOT the emissions test suggested it was very lean, yet I think it smells rich?
Well, the emissions test pretty much bears out what your gas tester suggested was the case.
I had the "rich smell" with my old 205GTi. I could make it run as weak as a weak thing but still it smelt rich I'm of the belief that you're smelling NOx rather than HC. It never fails to amaze me how much non-cat engines now smell (even when in good tune) after so many years of catted exhausts being totally odourless.
The one (and only) good thing to have come about as a result of legislation requiring the fitting of these obnoxious devices to petrol engines.
Did you get the emissions print-out from the machine? It'll make interesting reading