Please dont say that Chris, Im hoping it will do the job.
My opinion ludicrous as it is. This has happened twice to me but not so severe last time. I think its all to do with petrol sound stupid I know but this is my story.
The retard i bought the car off used to run it on 95 ron unleaded, (bloody idiot). Since ive owned it ive always used super unleaded 98 ron.
I tried some BP ultimate 1 day parked the car up over night and when I started it the next day it was banging and pluttering, wouldnt tick over, I had to keep my foot on the throttle just to keep it going. I was seriously overfueling to the point of the ehaust was stinking of petrol and if i reved it it blew out black smoke, I filled up the car with super and after a while it was fine.
This time, my local garage was closed so I again put some BT ultimate in from the same garage, and again I parked it up over night and had the same symptoms, bu if i reved it it would clear and be fine, Just struggled starting when cold again, then it just wouldnt dtart at all.
However far fetched it sounds I think its been accessive carbon build up due to overfueling thats caked up on and round the valve.
this is my story and im sticking to it, well hoping its right anyway.