Hi, I’m new here but, I was wondering what might be causing a boiling sound in the upper radiator hose, and I’m not sure what the part is that it’s connected to on the engine. It’s making the sound almost right at the point where they connect, maybe even in the part that I don’t know the name of. It’s not overheating according to the gauge on the dash. And I have no other issues. Just after I drive sometimes I hear it and it’s extremely hot. Either way, thank you in advance. Also, I had to already replace he head gasket
A couple years ago. Has ran good ever since.