eninge started heating up, replace themo, drive about 25 miles heats up again,

What is your question?

water coming out of over flow, notice let run at least 1 hr, drove dwn 6 miles never got hot, turned engine off started right back gauge start rising race rpm between 3 abd 4 thosand would come back dwn. no noise around water pump, head gasket not leaking, come the rad cap be bad??? thank you