What's up? I got a 53 Desoto that keeps over heating. I've put a new water pump in and it blew the seal on the water pump. I got another water pump and my ride is still overheatin. I put a new 7lb radiator cap, but I think that the cap might be to long for the spout off the radiator. If it is the cap being to long and not allowing the pressure to relieve from the radiator, could it cause my baby to over heat?