Update: Car is now on axle stands ready for belts, when moving the car into the garden i noticed the idle was fluctuating, remember that i need a t/stat and variator but can’t see why both of these would cause that. I am wondering if it is an early warning for another part needing replaced.
I dont think it is the lambda as the car did not reach to the right temp and has only happened a few times on a cold start up, i am thinking it may be to do with the overfueling

any ideas guys