My car keeps cutting out while driving and also sometimes when u got to start it in the morning or after it hasn't been started for a while it won't start so I replaced the coil that wasn't working and also replaced the spark plugs and leads because two were worn an sparking and it also bubbles at the radiator all the time every time u drive it but it never over heats. It's got me stumped wether its the battery. Ultinator, water pump also