Engine issue, can anyone help?

[StarBenn]

Your oil looks to be over-full for starters, would be surprised if thats related though. Flol at the bodged in petty clocks...

Dont know ive seen that problem before, would make a wild guess at knackered injectors, but that really is just a random guess. How many miles is it on?

Oils just on max. :/

Clocks I'm gonna sort, were like this when I brought it.

Around 84,000 miles.

Mechanic did say 'maybe injectors' along with 'maybe temperature sensor' and maybe 'fuel sensor' so I dunno , but after a little up in revs it then idles fine... Could it still be injectors do you think? :/