Yea cold and system pressure. Still having trouble starting when the engines cold. Done a compression test was all good.
Went out this morning to get readings and the pain in the erse started first time! Even let me use the accelerator without cutting out quicker. The only difference was that i left the valve closed last night. So the readings were Valve open 3.2bars. And closed it didnt change 3.2 bars - not sure if the closed valve from last night affected these so il try again with it open in few hours but possibly low system pressure? Thanks