Thanks azurite300E and Ivanerrol. Clearly posting in the evening ensures my post stays higher up the list - here's hoping this midday one is noticed

I have seen plenty of carbs in my time with similar looking dirt on them so thought nothing much of it being such a high-mileage motor, but having seen shots of other's AFMs I can see mine is definitely in need of a clean.

If I run the engine up with the air filter removed and therefore obviously have the oil-breather pipe off too (the venting pipe off the rocker cover) it's distinctly darkish-black smoky. No doubt a full oil change and filter is needed there (I did say it was neglected by its previous owner!). I'm surprised that the pipe doesn't vent into the outside of the air filter but instead it is drawn into the AFM unfiltered.

I am putting in lots of overtime in this month which I'll get paid in June so I will be in a position to go to the OEM dealership with your shopping list and do the overhaul on the injection system. Hopefully by then we'll have the same weather your 'suffering' with now. I mean, +20c, that's almost hat and scarf weather over your part of the world !!

I will ensure I take lots of photos of the work to post a guide to help other's , just as you have been so kind to help me - its much appreciated guys.

Kind regards,

Glyn B.