Gav 240z, yeah i have drained and replaced the fuel. Blew out teh lines, made sure the frsh fuel was getting to the carbs. I had teh filters off and was spraying start you bastard straight down the throat and it was coughing and spluttering, but couldn't get it started on the carbs alone. Thats why i am think about the rebuild as i could have blockage in there somewhere. I did also convert to the 280zx dizzy at the same time so i know the timing could be a bit out, but to not even get a cough when i know there is spark there has lead me to this conclusion.
The oil leak i have is for the piston in the carb. It then gets stuck when low and i only get fuel from one carb? does this make sense. Onceit was warm, it wasn't a prob just when cold, and then i knew it was time to top up the oil.
The car used to be my daily driver but has sat since the marvels of company cars. However this also meant that the time i had spare to work on it vanished in to this air. But know it is time to get it going again.