Can't get one engine to idle, it just dies. Starts and can run at 4500 rpm, then when it feels like it it will go up to 6500. Make a turn, down to 4500 stays there and catches up when it feels like it. Idle everything down and that engine dies. Will start again after choking a bit. Move to higher revs it works and holds then the whole cycle starts again. Fuel pump? Time to clean the carb? No grey fuel lines.
