idle and constant speed problem getting worse

[Popeye_6]

its not so much that mate, it feels like its doing the same thing holding constant speed which is what im more worried about....and if you scroll up youll see the colour of one month old spark plugs.

its still comes up with fuel adaptation out of range when its hooked up so if its running wrong i dont want to destroy the engine. if there wasnt a fault code i wouldnt be so worried